Head-to-head comparison
Claude Opus 5 vs. Mistral Medium 3.5
Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.
55
shared result series
1
distinct benchmarks
2026-08-16
latest retrieval
Change model selection
Specifications and cost
General specifications and standard API pricing
Undisclosed parameter counts and knowledge cutoffs stay marked as unavailable. The table shows direct standard token pricing, including documented context tiers. Batch, fast, priority, regional surcharges, tool calls, and cloud platform pricing are excluded.
| Attribute | Claude Opus 5 | Mistral Medium 3.5 |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Released | Jul 24, 2026 | Apr 28, 2026 |
| Availability | Active | Active |
| Model type | Proprietary | Open Weights |
| Parameters | Not published | Not published |
| Architecture | Not published | Not published |
| Context window | 1,000,000 tokens | 256,000 tokens |
| Knowledge cutoff | May 2026 | Not published |
| Technical sources | Model, Knowledge cutoff | Model |
| API pricing per 1M tokens | ||
| API input | $5 | $1.5 |
| API output | $25 | $7.5 |
| Cache read | $0.5 | Not listed |
| Cache write (5 min.) | $6.25 | Not listed |
| Cache write (1 hr.) | $10 | Not listed |
| Price verified | 07/30/2026Source | 07/30/2026Source |
Claude Opus 5Mistral Medium 3.5
API inputUSD per 1M tokens, base tier
Claude Opus 5$5
Mistral Medium 3.5$1.5Lower price
API outputUSD per 1M tokens, base tier
Claude Opus 5$25
Mistral Medium 3.5$7.5Lower price
Performance
Shared benchmarks
Only published results with the same benchmark version, task, metric, and comparison cohort are paired. Different reasoning levels, agents, harnesses, or output limits appear directly in the table.
55 shared result series
Claude Opus 5Mistral Medium 3.5
Arena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
Claude Opus 51,493.745 arena pointsHigher measured value
Mistral Medium 3.51,427.008 arena points
Arena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
Claude Opus 51,491.094 arena pointsHigher measured value
Mistral Medium 3.51,427.008 arena points
Arena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical
Claude Opus 51,488.821 arena pointsHigher measured value
Mistral Medium 3.51,430.152 arena points
Arena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical
Claude Opus 51,479.46 arena pointsHigher measured value
Mistral Medium 3.51,430.152 arena points
Arena Text, Style ControlChinese. Higher is better. Test setup not documented as identical
Claude Opus 51,575.542 arena pointsHigher measured value
Mistral Medium 3.51,450.261 arena points
Arena Text, Style ControlChinese. Higher is better. Test setup not documented as identical
Claude Opus 51,562.711 arena pointsHigher measured value
Mistral Medium 3.51,450.261 arena points
Arena Text, Style ControlCoding. Higher is better. Test setup not documented as identical
Claude Opus 51,530.655 arena pointsHigher measured value
Mistral Medium 3.51,478.733 arena points
Arena Text, Style ControlCoding. Higher is better. Test setup not documented as identical
Claude Opus 51,529.686 arena pointsHigher measured value
Mistral Medium 3.51,478.733 arena points
Arena Text, Style ControlCreative writing. Higher is better. Test setup not documented as identical
Claude Opus 51,478.457 arena pointsHigher measured value
Mistral Medium 3.51,396.218 arena points
Arena Text, Style ControlCreative writing. Higher is better. Test setup not documented as identical
Claude Opus 51,469.886 arena pointsHigher measured value
Mistral Medium 3.51,396.218 arena points
Arena Text, Style ControlEnglish. Higher is better. Test setup not documented as identical
Claude Opus 51,494.995 arena pointsHigher measured value
Mistral Medium 3.51,444.801 arena points
Arena Text, Style ControlEnglish. Higher is better. Test setup not documented as identical
Claude Opus 51,492.778 arena pointsHigher measured value
Mistral Medium 3.51,444.801 arena points
| Benchmark and task | Claude Opus 5 | Mistral Medium 3.5 | Comparability | Source |
|---|---|---|---|---|
| Arena Text, Style ControlOverall | 1,493.745 arena pointsHigher measured value 95% confidence interval: ±5.332The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,427.008 arena points 95% confidence interval: ±6.567The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:overallTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 19,792 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 11,022 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlOverall | 1,491.094 arena pointsHigher measured value 95% confidence interval: ±6.993The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,427.008 arena points 95% confidence interval: ±6.567The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:overallTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 9,559 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 11,022 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlBusiness, management and finance | 1,488.821 arena pointsHigher measured value 95% confidence interval: ±10.372The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,430.152 arena points 95% confidence interval: ±13.219The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_business_and_management_and_financial_operationsTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,811 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,143 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlBusiness, management and finance | 1,479.46 arena pointsHigher measured value 95% confidence interval: ±14.788The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,430.152 arena points 95% confidence interval: ±13.219The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_business_and_management_and_financial_operationsTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,785 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,143 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlChinese | 1,575.542 arena pointsHigher measured value 95% confidence interval: ±17.296The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,450.261 arena points 95% confidence interval: ±26.734The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:chineseTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,411 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 502 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlChinese | 1,562.711 arena pointsHigher measured value 95% confidence interval: ±23.686The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,450.261 arena points 95% confidence interval: ±26.734The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:chineseTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 706 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 502 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlCoding | 1,530.655 arena pointsHigher measured value 95% confidence interval: ±8.967The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,478.733 arena points 95% confidence interval: ±11.154The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:codingTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,388 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,082 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlCoding | 1,529.686 arena pointsHigher measured value 95% confidence interval: ±12.157The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,478.733 arena points 95% confidence interval: ±11.154The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:codingTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,591 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,082 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlCreative writing | 1,478.457 arena pointsHigher measured value 95% confidence interval: ±10.296The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,396.218 arena points 95% confidence interval: ±14.428The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:creative_writingTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 4,082 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,861 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlCreative writing | 1,469.886 arena pointsHigher measured value 95% confidence interval: ±14.52The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,396.218 arena points 95% confidence interval: ±14.428The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:creative_writingTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,953 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,861 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlEnglish | 1,494.995 arena pointsHigher measured value 95% confidence interval: ±7.427The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,444.801 arena points 95% confidence interval: ±8.671The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:englishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 8,123 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,311 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlEnglish | 1,492.778 arena pointsHigher measured value 95% confidence interval: ±9.855The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,444.801 arena points 95% confidence interval: ±8.671The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:englishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,966 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,311 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlEntertainment, sports and media | 1,466.098 arena pointsHigher measured value 95% confidence interval: ±9.312The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,396.264 arena points 95% confidence interval: ±12.523The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_entertainment_and_sports_and_mediaTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,063 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,442 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlEntertainment, sports and media | 1,465.448 arena pointsHigher measured value 95% confidence interval: ±12.863The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,396.264 arena points 95% confidence interval: ±12.523The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_entertainment_and_sports_and_mediaTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,450 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,442 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlExcluding ties | 1,508.465 arena pointsHigher measured value 95% confidence interval: ±7.043The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,421.102 arena points 95% confidence interval: ±8.693The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:exclude_tiesTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 15,069 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 8,302 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlExcluding ties | 1,505.222 arena pointsHigher measured value 95% confidence interval: ±9.085The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,421.102 arena points 95% confidence interval: ±8.693The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:exclude_tiesTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 7,272 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 8,302 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlExpert prompts | 1,539.237 arena pointsHigher measured value 95% confidence interval: ±13.413The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,437.963 arena points 95% confidence interval: ±17.885The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:expertTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,255 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,109 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlExpert prompts | 1,517.031 arena pointsHigher measured value 95% confidence interval: ±18.805The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,437.963 arena points 95% confidence interval: ±17.885The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:expertTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,060 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,109 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlFrench | 1,500.695 arena pointsHigher measured value 95% confidence interval: ±24.101The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,437.162 arena points 95% confidence interval: ±30.614The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:frenchTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 674 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 440 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlFrench | 1,511.772 arena pointsHigher measured value 95% confidence interval: ±35.109The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,437.162 arena points 95% confidence interval: ±30.614The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:frenchTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 311 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 440 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlGerman | 1,498.048 arena pointsHigher measured value 95% confidence interval: ±35.155The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,441.705 arena points 95% confidence interval: ±44.46The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:germanTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 292 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 170 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlGerman | 1,525.115 arena pointsHigher measured value 95% confidence interval: ±48.157The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,441.705 arena points 95% confidence interval: ±44.46The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:germanTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 158 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 170 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlHard prompts | 1,519.69 arena pointsHigher measured value 95% confidence interval: ±6.436The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,445.368 arena points 95% confidence interval: ±7.871The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:hard_promptsTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 13,214 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 7,159 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlHard prompts | 1,517.136 arena pointsHigher measured value 95% confidence interval: ±8.278The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,445.368 arena points 95% confidence interval: ±7.871The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:hard_promptsTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 6,305 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 7,159 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlHard prompts, English | 1,519.955 arena pointsHigher measured value 95% confidence interval: ±8.892The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,457.822 arena points 95% confidence interval: ±10.361The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:hard_prompts_englishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,370 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,642 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlHard prompts, English | 1,512.971 arena pointsHigher measured value 95% confidence interval: ±12.249The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,457.822 arena points 95% confidence interval: ±10.361The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:hard_prompts_englishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,559 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,642 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlInstruction following | 1,498.339 arena pointsHigher measured value 95% confidence interval: ±8.058The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,422.086 arena points 95% confidence interval: ±10.353The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:instruction_followingTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 7,090 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,557 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlInstruction following | 1,490.877 arena pointsHigher measured value 95% confidence interval: ±10.995The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,422.086 arena points 95% confidence interval: ±10.353The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:instruction_followingTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,278 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,557 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlKorean | 1,479.012 arena pointsHigher measured value 95% confidence interval: ±29.274The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,392.952 arena points 95% confidence interval: ±44.647The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:koreanTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 438 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 178 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlKorean | 1,500.288 arena pointsHigher measured value 95% confidence interval: ±39.267The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,392.952 arena points 95% confidence interval: ±44.647The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:koreanTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 235 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 178 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLegal and government | 1,514.502 arena pointsHigher measured value 95% confidence interval: ±15.318The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,438.388 arena points 95% confidence interval: ±21.256The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_legal_and_governmentTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,650 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 844 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLegal and government | 1,514.085 arena pointsHigher measured value 95% confidence interval: ±21.615The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,438.388 arena points 95% confidence interval: ±21.256The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_legal_and_governmentTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 811 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 844 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLife, physical and social science | 1,514.892 arena pointsHigher measured value 95% confidence interval: ±10.683The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,433.414 arena points 95% confidence interval: ±14.39The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_life_and_physical_and_social_scienceTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,447 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,823 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLife, physical and social science | 1,508.954 arena pointsHigher measured value 95% confidence interval: ±15.321The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,433.414 arena points 95% confidence interval: ±14.39The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_life_and_physical_and_social_scienceTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,588 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,823 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLonger queries | 1,507.154 arena pointsHigher measured value 95% confidence interval: ±7.411The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,430.645 arena points 95% confidence interval: ±9.453The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:longer_queryTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 9,479 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,657 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLonger queries | 1,502.557 arena pointsHigher measured value 95% confidence interval: ±9.708The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,430.645 arena points 95% confidence interval: ±9.453The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:longer_queryTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 4,547 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,657 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMath | 1,524.546 arena pointsHigher measured value 95% confidence interval: ±20.219The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,429.157 arena points 95% confidence interval: ±24.882The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:mathTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 915 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 539 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMath | 1,556.296 arena pointsHigher measured value 95% confidence interval: ±28.772The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,429.157 arena points 95% confidence interval: ±24.882The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:mathTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 429 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 539 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMathematical professions | 1,540.168 arena pointsHigher measured value 95% confidence interval: ±19.218The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,439.68 arena points 95% confidence interval: ±24.051The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_mathematicalTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,064 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 590 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMathematical professions | 1,514.792 arena pointsHigher measured value 95% confidence interval: ±26.116The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,439.68 arena points 95% confidence interval: ±24.051The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_mathematicalTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 542 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 590 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMedicine and healthcare | 1,501.189 arena pointsHigher measured value 95% confidence interval: ±15.955The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,423.156 arena points 95% confidence interval: ±21.773The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_medicine_and_healthcareTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,529 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 807 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMedicine and healthcare | 1,505.703 arena pointsHigher measured value 95% confidence interval: ±22.978The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,423.156 arena points 95% confidence interval: ±21.773The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_medicine_and_healthcareTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 739 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 807 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMulti-turn | 1,490.073 arena pointsHigher measured value 95% confidence interval: ±11.259The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,431.607 arena points 95% confidence interval: ±14.403The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:multi_turnTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,169 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,812 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMulti-turn | 1,485.443 arena pointsHigher measured value 95% confidence interval: ±16.096The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,431.607 arena points 95% confidence interval: ±14.403The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:multi_turnTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,470 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,812 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlNon-English | 1,486.08 arena pointsHigher measured value 95% confidence interval: ±6.582The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,406.489 arena points 95% confidence interval: ±8.386The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:non_englishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 11,669 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,711 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlNon-English | 1,485.597 arena pointsHigher measured value 95% confidence interval: ±8.652The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,406.489 arena points 95% confidence interval: ±8.386The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:non_englishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,593 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,711 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlPolish | 1,498.593 arena pointsHigher measured value 95% confidence interval: ±33.628The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,408.19 arena points 95% confidence interval: ±38.902The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:polishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 305 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 226 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlRussian | 1,498.889 arena pointsHigher measured value 95% confidence interval: ±13.596The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,416.701 arena points 95% confidence interval: ±17.895The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:russianTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,133 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,140 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlRussian | 1,487.827 arena pointsHigher measured value 95% confidence interval: ±19.252The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,416.701 arena points 95% confidence interval: ±17.895The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:russianTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,011 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,140 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlSoftware and IT services | 1,524.68 arena pointsHigher measured value 95% confidence interval: ±7.748The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,470.303 arena points 95% confidence interval: ±9.539The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_software_and_it_servicesTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 7,730 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,328 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlSoftware and IT services | 1,521.408 arena pointsHigher measured value 95% confidence interval: ±10.291The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,470.303 arena points 95% confidence interval: ±9.539The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_software_and_it_servicesTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,675 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,328 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlSpanish | 1,483.936 arena pointsHigher measured value 95% confidence interval: ±27.307The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,387.211 arena points 95% confidence interval: ±32.775The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:spanishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 502 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 373 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlSpanish | 1,488.546 arena pointsHigher measured value 95% confidence interval: ±41.85The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,387.211 arena points 95% confidence interval: ±32.775The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:spanishTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 200 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 373 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlWriting, literature and language | 1,489.379 arena pointsHigher measured value 95% confidence interval: ±8.922The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,405.854 arena points 95% confidence interval: ±11.763The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_writing_and_literature_and_languageTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,451 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,730 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlWriting, literature and language | 1,483.86 arena pointsHigher measured value 95% confidence interval: ±12.287The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | 1,405.854 arena points 95% confidence interval: ±11.763The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result. | style-control-v1style-controlled Bradley-Terry ratingHigher is betterCohort: lmarena-text-style-control:2026-08-12:industry_writing_and_literature_and_languageTest setup not documented as identicalNo direct winnerClaude Opus 5: Snapshot: claude-opus-5-max, Reasoning: max, Harness: Arena text, style control Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,660 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,730 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
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