Head-to-head comparison
Claude Opus 5 vs. Grok 4.6
Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.
60
shared result series
23
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 | Grok 4.6 |
|---|---|---|
| Provider | Anthropic | xAI |
| Released | Jul 24, 2026 | Aug 12, 2026 |
| Availability | Active | Active |
| Model type | Proprietary | Proprietary |
| Parameters | Not published | Not published |
| Architecture | Not published | Not published |
| Context window | 1,000,000 tokens | 500,000 tokens |
| Knowledge cutoff | May 2026 | February 1, 2026 |
| Technical sources | Model, Knowledge cutoff | Model |
| API pricing per 1M tokens | ||
| API input | $5 | $2 ≤200K / $4 >200K |
| API output | $25 | $6 ≤200K / $12 >200K |
| Cache read | $0.5 | $0.5 ≤200K / $1 >200K |
| Cache write (5 min.) | $6.25 | Not listed |
| Cache write (1 hr.) | $10 | Not listed |
| Price verified | 07/30/2026Source | 08/16/2026Source |
Claude Opus 5Grok 4.6
API inputUSD per 1M tokens, base tier
Claude Opus 5$5
Grok 4.6$2Lower price
API outputUSD per 1M tokens, base tier
Claude Opus 5$25
Grok 4.6$6Lower price
Cache readUSD per 1M tokens, base tier
Claude Opus 5$0.5Tie
Grok 4.6$0.5Tie
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.
60 shared result series
Claude Opus 5Grok 4.6
Arena Text, Style ControlOverall. Higher is better. No documented setup difference
Claude Opus 51,493.745 arena pointsWinner
Grok 4.61,464.323 arena points
Code MigrationOverall. Higher is better. No documented setup difference
Claude Opus 557.473 %Winner
Grok 4.644.572 %
CorpFin v2Overall. Higher is better. No documented setup difference
Claude Opus 573.194 %Winner
Grok 4.666.161 %
EMBOverall. Higher is better. No documented setup difference
Claude Opus 573.556 %Winner
Grok 4.662.727 %
Finance Agent (v2)Overall. Higher is better. No documented setup difference
Claude Opus 558.633 %Winner
Grok 4.653.682 %
GPQA DiamondOverall. Higher is better. No documented setup difference
Claude Opus 593.434 %
Grok 4.694.697 %Winner
Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. No documented setup difference
Claude Opus 56.667 %
Grok 4.615.833 %Winner
Legal Research BenchOverall · All-pass. Higher is better. No documented setup difference
Claude Opus 555.288 %Winner
Grok 4.648.077 %
LegalBenchOverall. Higher is better. No documented setup difference
Claude Opus 586.974 %Winner
Grok 4.686.307 %
LiveCodeBench v6Overall. Higher is better. No documented setup difference
Claude Opus 589.033 %Winner
Grok 4.688.224 %
MedCodeOverall. Higher is better. No documented setup difference
Claude Opus 563.57 %Winner
Grok 4.644.712 %
MedScribeOverall. Higher is better. No documented setup difference
Claude Opus 590.985 %Winner
Grok 4.686.534 %
| Benchmark and task | Claude Opus 5 | Grok 4.6 | Comparability | Source |
|---|---|---|---|---|
| Arena Text, Style ControlOverallReasoning: high | 1,493.745 arena pointsWinner 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. | 1,464.323 arena points 95% confidence interval: ±11.88The 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:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 19,792 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 2,448 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Code MigrationOverall | 57.473 %Winner | 44.572 % | 1accuracyHigher is betterCohort: vals-code-migration:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-13Import ID: vals-code-migration-2026-08-16-107652dc6bfcRetrieved 2026-08-16 |
| CorpFin v2Overall | 73.194 %Winner | 66.161 % | 2accuracyHigher is betterCohort: vals-corp-fin-v2:2:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-corp_fin_v2-2026-08-16-45bbf84f57abRetrieved 2026-08-16 |
| EMBOverall | 73.556 %Winner | 62.727 % | 1accuracyHigher is betterCohort: vals-emb:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-13Import ID: vals-emb-2026-08-16-68d5d1d47a97Retrieved 2026-08-16 |
| Finance Agent (v2)Overall | 58.633 %Winner | 53.682 % | 2accuracyHigher is betterCohort: vals-finance-agent-v2:2:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-14Import ID: vals-fabv2-2026-08-16-8853da43085dRetrieved 2026-08-16 |
| GPQA DiamondOverall | 93.434 % | 94.697 %Winner | 1accuracyHigher is betterCohort: vals-gpqa:1:overallNo documented setup differenceWinner: Grok 4.6Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-gpqa-2026-08-16-7f8363eaa2dbRetrieved 2026-08-16 |
| Harvey's Legal Agent BenchmarkOverall · Task fully resolved | 6.667 % | 15.833 %Winner | 1task resolution rateHigher is betterCohort: vals-legal-agent-benchmark:1:overallNo documented setup differenceWinner: Grok 4.6Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-14Import ID: vals-hlab-2026-08-16-bae90566df2fRetrieved 2026-08-16 |
| Legal Research BenchOverall · All-pass | 55.288 %Winner | 48.077 % | 1all-pass rateHigher is betterCohort: vals-legal-research:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-14Import ID: vals-legal_research-2026-08-16-af296c00ecaaRetrieved 2026-08-16 |
| LegalBenchOverall | 86.974 %Winner | 86.307 % | 1accuracyHigher is betterCohort: vals-legal-bench:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-legal_bench-2026-08-16-d5b3b1b2b5c8Retrieved 2026-08-16 |
| LiveCodeBench v6Overall | 89.033 %Winner | 88.224 % | 1accuracyHigher is betterCohort: vals-lcb:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-13Import ID: vals-lcb-2026-08-16-17b9c147080dRetrieved 2026-08-16 |
| MedCodeOverall | 63.57 %Winner | 44.712 % | 1accuracyHigher is betterCohort: vals-medcode:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-medcode-2026-08-16-524f7f474eacRetrieved 2026-08-16 |
| MedScribeOverall | 90.985 %Winner | 86.534 % | 1accuracyHigher is betterCohort: vals-medscribe:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-medscribe-2026-08-16-c385354a7e62Retrieved 2026-08-16 |
| MMLU-ProOverall | 91.591 %Winner | 89.4 % | 1accuracyHigher is betterCohort: vals-mmlu-pro:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-mmlu_pro-2026-08-16-e14d5bb3a34cRetrieved 2026-08-16 |
| MortgageTaxOverall | 72.059 %Winner | 64.189 % | 1accuracyHigher is betterCohort: vals-mortgage-tax:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-mortgage_tax-2026-08-16-e78c985dbb1cRetrieved 2026-08-16 |
| ProofBenchOverall | 99 %Winner | 51 % | 1.1accuracyHigher is betterCohort: vals-proof-bench:1.1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-14Import ID: vals-proof_bench-2026-08-16-14232db24de1Retrieved 2026-08-16 |
| Public Benefits Bench v1.1Overall | 76.928 %Winner | 66.847 % | 1.1accuracyHigher is betterCohort: vals-snap:1.1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-public-benefits-bench-2026-08-16-7ce68123c502Retrieved 2026-08-16 |
| SAGEOverall | 49.426 %Winner | 28.9 % | 1accuracyHigher is betterCohort: vals-sage:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-sage-2026-08-16-a416dd25affbRetrieved 2026-08-16 |
| SkillsBenchOverall | 60.441 %Winner | 55.766 % | 1accuracyHigher is betterCohort: vals-skillsbench:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Harness: OpenHands Grok 4.6: Harness: OpenHands | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-13Import ID: vals-skillsbench-2026-08-16-4917a67268d2Retrieved 2026-08-16 |
| SWE-bench VerifiedOverall | 97 %Winner | 95.6 % | 1accuracyHigher is betterCohort: vals-swebench:1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-swebench-2026-08-16-c133071b8167Retrieved 2026-08-16 |
| TaxEval v2Overall | 75.143 %Winner | 71.096 % | 2accuracyHigher is betterCohort: vals-tax-eval-v2:2:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-12Import ID: vals-tax_eval_v2-2026-08-16-5bbd495dac53Retrieved 2026-08-16 |
| Terminal-Bench 2.1Overall | 84.644 %Winner | 78.277 % | 2.1accuracyHigher is betterCohort: vals-terminal-bench-2-1:2.1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-13Import ID: vals-terminal-bench-2-1-2026-08-16-b3f38c18bea4Retrieved 2026-08-16 |
| Vals IndexOverall | 67.213 %Winner | 59.167 % | 2weighted index scoreHigher is betterCohort: vals-vals-index:2:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: No further settings disclosed Grok 4.6: No further settings disclosed | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-14Import ID: vals-vals_index-2026-08-16-ab641d89d6edRetrieved 2026-08-16 |
| Vibe Code Bench v1.1Overall | 88.404 %Winner | 76.239 % | 1.1accuracyHigher is betterCohort: vals-vibe-code-bench:1.1:overallNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Harness: OpenHands Grok 4.6: Harness: OpenHands | Vals AIType: Independent evaluationLeaderboard updated: 2026-08-13Import ID: vals-vibe-code-2026-08-16-a73c9770bcc4Retrieved 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. | 1,464.323 arena points 95% confidence interval: ±11.88The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 9,559 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 2,448 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlBusiness, management and financeReasoning: high | 1,488.821 arena pointsNo clear lead 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. | 1,455.102 arena points 95% confidence interval: ±27.332The 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_operationsNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,811 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 442 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. | 1,455.102 arena points 95% confidence interval: ±27.332The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,785 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 442 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlChineseReasoning: high | 1,575.542 arena pointsNo clear lead 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. | 1,535.167 arena points 95% confidence interval: ±39.462The 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:chineseNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,411 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 215 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. | 1,535.167 arena points 95% confidence interval: ±39.462The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 706 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 215 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlCodingReasoning: high | 1,530.655 arena pointsNo clear lead 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. | 1,511.77 arena points 95% confidence interval: ±26.72The 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:codingNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,388 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 485 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. | 1,511.77 arena points 95% confidence interval: ±26.72The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,591 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 485 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlCreative writingReasoning: high | 1,478.457 arena pointsNo clear lead 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. | 1,472.894 arena points 95% confidence interval: ±31.578The 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_writingNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 4,082 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 379 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 points 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. | 1,472.894 arena pointsHigher measured value 95% confidence interval: ±31.578The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,953 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 379 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlEnglishReasoning: high | 1,494.995 arena pointsWinner 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. | 1,459.266 arena points 95% confidence interval: ±18.461The 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:englishNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 8,123 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 998 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. | 1,459.266 arena points 95% confidence interval: ±18.461The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,966 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 998 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlEntertainment, sports and mediaReasoning: high | 1,466.098 arena pointsNo clear lead 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. | 1,455.476 arena points 95% confidence interval: ±28.81The 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_mediaNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,063 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 448 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. | 1,455.476 arena points 95% confidence interval: ±28.81The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,450 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 448 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlExcluding tiesReasoning: high | 1,508.465 arena pointsWinner 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. | 1,469.633 arena points 95% confidence interval: ±16.492The 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_tiesNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 15,069 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,782 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. | 1,469.633 arena points 95% confidence interval: ±16.492The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 7,272 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,782 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlExpert promptsReasoning: high | 1,539.237 arena pointsWinner 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. | 1,479.969 arena points 95% confidence interval: ±34.191The 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:expertNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,255 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 272 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. | 1,479.969 arena points 95% confidence interval: ±34.191The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,060 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 272 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlHard promptsReasoning: high | 1,519.69 arena pointsWinner 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. | 1,488.551 arena points 95% confidence interval: ±15.88The 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_promptsNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 13,214 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,397 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. | 1,488.551 arena points 95% confidence interval: ±15.88The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 6,305 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,397 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlHard prompts, EnglishReasoning: high | 1,519.955 arena pointsWinner 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. | 1,472.181 arena points 95% confidence interval: ±25.031The 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_englishNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,370 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 543 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. | 1,472.181 arena points 95% confidence interval: ±25.031The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,559 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 543 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlInstruction followingReasoning: high | 1,498.339 arena pointsWinner 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. | 1,460.755 arena points 95% confidence interval: ±21.635The 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_followingNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 7,090 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 732 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. | 1,460.755 arena points 95% confidence interval: ±21.635The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,278 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 732 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 scienceReasoning: high | 1,514.892 arena pointsNo clear lead 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. | 1,497.908 arena points 95% confidence interval: ±31.96The 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_scienceNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,447 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 335 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. | 1,497.908 arena points 95% confidence interval: ±31.96The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,588 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 335 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlLonger queriesReasoning: high | 1,507.154 arena pointsNo clear lead 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. | 1,485.451 arena points 95% confidence interval: ±18.11The 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_queryNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 9,479 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,103 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. | 1,485.451 arena points 95% confidence interval: ±18.11The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 4,547 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,103 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlMulti-turnReasoning: high | 1,490.073 arena pointsWinner 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. | 1,444.26 arena points 95% confidence interval: ±31.774The 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_turnNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,169 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 352 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. | 1,444.26 arena points 95% confidence interval: ±31.774The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,470 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 352 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlNon-EnglishReasoning: high | 1,486.08 arena pointsWinner 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. | 1,461.99 arena points 95% confidence interval: ±15.246The 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_englishNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 11,669 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,450 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. | 1,461.99 arena points 95% confidence interval: ±15.246The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,593 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 1,450 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlRussianReasoning: high | 1,498.889 arena pointsWinner 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. | 1,446.737 arena points 95% confidence interval: ±34.404The 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:russianNo documented setup differenceWinner: Claude Opus 5Claude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,133 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 275 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. | 1,446.737 arena points 95% confidence interval: ±34.404The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 1,011 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 275 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlSoftware and IT servicesReasoning: high | 1,524.68 arena pointsNo clear lead 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. | 1,511.885 arena points 95% confidence interval: ±20.78The 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_servicesNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 7,730 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 805 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. | 1,511.885 arena points 95% confidence interval: ±20.78The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 3,675 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 805 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
| Arena Text, Style ControlWriting, literature and languageReasoning: high | 1,489.379 arena pointsNo clear lead 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. | 1,455.393 arena points 95% confidence interval: ±25.717The 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_languageNo documented setup differenceNo clear leadClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 5,451 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 543 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. | 1,455.393 arena points 95% confidence interval: ±25.717The 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 Grok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 2,660 anonymous pairwise votes.Grok 4.6: Style-controlled Arena rating from 543 anonymous pairwise votes. | ArenaType: Official benchmark leaderboardLeaderboard updated: 2026-08-12Import ID: lmarena-eeedf9209373a7f9b324bfb839e7b02fedacd1e5-1611ed64f3f1Retrieved 2026-08-16 |
How to read this comparison
Winning one benchmark is not an overall verdict
Your workload, budget, and required context length matter most. A coding benchmark says little about visual understanding or agent performance.
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Every result links to its measurement source and retrieval date. Labels distinguish vendor reports, official benchmark leaderboards, and independent evaluations. Disputed or archived results are excluded.