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Head-to-head comparison

Claude Sonnet 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.

shared result series
28
distinct benchmarks
1
latest retrieval
2026-09-04

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Specifications

General specifications

Release date, availability, context window, architecture, and published parameter counts at a glance. Undisclosed details remain marked as unavailable.

Specifications for Claude Sonnet 5 and Mistral Medium 3.5
AttributeClaude Sonnet 5Mistral Medium 3.5
ProviderAnthropicMistral AI
ReleasedJun 30, 2026Apr 28, 2026
AvailabilityActiveActive
Model typeProprietaryOpen Weights
ParametersNot publishedNot published
ArchitectureNot publishedNot published
Context window1,000,000 tokens256,000 tokens
Knowledge cutoffJanuary 2026Not published
Technical sourcesModel, ContextModel

Pricing

API pricing compared

The table compares official standard API rates per 1M tokens, including published cache pricing. Batch, fast, priority, regional surcharges, tool calls, and cloud platform pricing are excluded.

API pricing for Claude Sonnet 5 and Mistral Medium 3.5
Price typeClaude Sonnet 5Mistral Medium 3.5
API input$2$1.5
API output$10$7.5
Cache read$0.2Not listed
Cache write (5 min.)$2.5Not listed
Cache write (1 hr.)$4Not listed
Price verified09/02/2026 Source07/30/2026 Source
Claude Sonnet 5Mistral Medium 3.5
API inputUSD per 1M tokens, base tier
Claude Sonnet 5$2
Mistral Medium 3.5Lower price$1.5
API outputUSD per 1M tokens, base tier
Claude Sonnet 5$10
Mistral Medium 3.5Lower price$7.5

Key to the marks:better valuebetter, but not conclusivetie

Pricing by provider

Direct developer pricing and provider endpoint tariffs routed through OpenRouter are listed separately. Prices are in USD per 1M tokens. Context-dependent direct tiers plus regional, Flex, Priority, and other OpenRouter tariffs remain individually identifiable.

Provider pricing for Claude Sonnet 5 and Mistral Medium 3.5
ModelProviderPurchase route and tariffInput per 1M tokensOutput per 1M tokensSource
Claude Sonnet 5AnthropicDirect from developerStandard APILowest listed price: $2Lowest listed price: $10Source09/02/2026
Amazon BedrockVia OpenRouteramazon-bedrock/globalLowest listed price: $2Lowest listed price: $10Source09/06/2026
Amazon BedrockVia OpenRouteramazon-bedrock/us-east-1$2.2$11Source09/06/2026
AnthropicVia OpenRouteranthropicLowest listed price: $2Lowest listed price: $10Source09/06/2026
AzureVia OpenRouterazure/globalLowest listed price: $2Lowest listed price: $10Source09/06/2026
AzureVia OpenRouterazure/usLowest listed price: $2Lowest listed price: $10Source09/06/2026
Claude Platform on AWSVia OpenRouterclaude-on-awsLowest listed price: $2Lowest listed price: $10Source09/06/2026
GoogleVia OpenRoutergoogle-vertex/europe$2.2$11Source09/06/2026
GoogleVia OpenRoutergoogle-vertex/globalLowest listed price: $2Lowest listed price: $10Source09/06/2026
GoogleVia OpenRoutergoogle-vertex/us$2.2$11Source09/06/2026
Mistral Medium 3.5Mistral AIDirect from developerStandard APILowest listed price: $1.5Lowest listed price: $7.5Source07/30/2026
MistralVia OpenRoutermistralLowest listed price: $1.5Lowest listed price: $7.5Source09/06/2026
MistralVia OpenRoutermistral/eu$1.65$8.25Source09/06/2026
MistralVia OpenRoutermistral/zdrLowest listed price: $1.5Lowest listed price: $7.5Source09/06/2026

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.

Capability profile from matched benchmarks

Each axis averages directly matched benchmark families. A value of 100 means the stronger value within this pair, not a universal quality score.

Not enough directly matched categories for a reliable radar

Only 0 of at least 5 categories have comparable, direct model measurements. The benchmark tables below show the available evidence without filling missing axes.

Claude Sonnet 5Mistral Medium 3.5
LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,462.16
Mistral Medium 3.51,426.98
LMArena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,462.981
Mistral Medium 3.51,431.113
LMArena Text, Style ControlChinese. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,499.492
Mistral Medium 3.51,448.299
LMArena Text, Style ControlCoding. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,520.647
Mistral Medium 3.51,478.845
LMArena Text, Style ControlCreative writing. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,437.519
Mistral Medium 3.51,396.971
LMArena Text, Style ControlEnglish. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,473.71
Mistral Medium 3.51,444.656
LMArena Text, Style ControlEntertainment, sports and media. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,432.479
Mistral Medium 3.51,396.875
LMArena Text, Style ControlExcluding ties. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,467.502
Mistral Medium 3.51,421.17
LMArena Text, Style ControlExpert prompts. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,510.217
Mistral Medium 3.51,438.278
LMArena Text, Style ControlFrench. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,484.457
Mistral Medium 3.51,436.08
LMArena Text, Style ControlGerman. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,477.479
Mistral Medium 3.51,442.607
LMArena Text, Style ControlHard prompts. Higher is better. Test setup not documented as identical
Claude Sonnet 5Higher measured value1,490.094
Mistral Medium 3.51,445.592

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for Claude Sonnet 5 and Mistral Medium 3.5
Benchmark and taskClaude Sonnet 5Mistral Medium 3.5Source
LMArena Text, Style ControlOverall
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 31,096 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 11,017 anonymous pairwise votes.
Higher measured value1,462.16
95% confidence interval: ±4.745The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,426.98
95% confidence interval: ±6.556The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlBusiness, management and finance
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 6,214 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,148 anonymous pairwise votes.
Higher measured value1,462.981
95% confidence interval: ±8.229The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,431.113
95% confidence interval: ±13.17The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlChinese
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 2,074 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 500 anonymous pairwise votes.
Higher measured value1,499.492
95% confidence interval: ±13.64The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,448.299
95% confidence interval: ±26.61The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlCoding
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 8,576 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,079 anonymous pairwise votes.
Higher measured value1,520.647
95% confidence interval: ±7.348The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,478.845
95% confidence interval: ±11.157The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlCreative writing
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 6,087 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,862 anonymous pairwise votes.
Higher measured value1,437.519
95% confidence interval: ±8.524The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,396.971
95% confidence interval: ±14.389The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlEnglish
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 13,422 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,299 anonymous pairwise votes.
Higher measured value1,473.71
95% confidence interval: ±6.123The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,444.656
95% confidence interval: ±8.682The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlEntertainment, sports and media
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 7,751 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,453 anonymous pairwise votes.
Higher measured value1,432.479
95% confidence interval: ±7.757The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,396.875
95% confidence interval: ±12.491The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlExcluding ties
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 23,349 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 8,299 anonymous pairwise votes.
Higher measured value1,467.502
95% confidence interval: ±6.142The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,421.17
95% confidence interval: ±8.686The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlExpert prompts
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 3,376 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,110 anonymous pairwise votes.
Higher measured value1,510.217
95% confidence interval: ±10.682The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,438.278
95% confidence interval: ±17.831The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlFrench
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 1,079 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 438 anonymous pairwise votes.
Higher measured value1,484.457
95% confidence interval: ±19.668The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,436.08
95% confidence interval: ±30.551The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlGerman
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 502 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 170 anonymous pairwise votes.
Higher measured value1,477.479
95% confidence interval: ±27.12The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,442.607
95% confidence interval: ±44.317The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlHard prompts
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 20,640 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 7,154 anonymous pairwise votes.
Higher measured value1,490.094
95% confidence interval: ±5.487The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,445.592
95% confidence interval: ±7.857The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlHard prompts, English
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 8,973 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,629 anonymous pairwise votes.
Higher measured value1,497.22
95% confidence interval: ±7.16The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,458.246
95% confidence interval: ±10.39The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlInstruction following
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 10,907 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,561 anonymous pairwise votes.
Higher measured value1,465.887
95% confidence interval: ±6.647The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,422.491
95% confidence interval: ±10.335The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlKorean
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 569 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 178 anonymous pairwise votes.
Higher measured value1,426.245
95% confidence interval: ±25.783The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,394.42
95% confidence interval: ±44.572The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlLegal and government
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 2,686 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 839 anonymous pairwise votes.
Higher measured value1,480.894
95% confidence interval: ±12.038The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,437.785
95% confidence interval: ±21.302The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlLife, physical and social science
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 5,123 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,823 anonymous pairwise votes.
Higher measured value1,487.544
95% confidence interval: ±8.817The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,433.494
95% confidence interval: ±14.359The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlLonger queries
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 14,382 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,661 anonymous pairwise votes.
Higher measured value1,482.113
95% confidence interval: ±6.3The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,430.723
95% confidence interval: ±9.428The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlMath
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 1,355 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 539 anonymous pairwise votes.
Higher measured value1,473.628
95% confidence interval: ±15.97The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,429.582
95% confidence interval: ±24.872The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlMathematical professions
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 1,635 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 597 anonymous pairwise votes.
Higher measured value1,487.105
95% confidence interval: ±14.914The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,442.192
95% confidence interval: ±23.932The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlMedicine and healthcare
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 2,269 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 802 anonymous pairwise votes.
Higher measured value1,478.121
95% confidence interval: ±13.327The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,423.47
95% confidence interval: ±21.791The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlMulti-turn
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 5,435 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,803 anonymous pairwise votes.
Higher measured value1,471.179
95% confidence interval: ±8.759The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,431.302
95% confidence interval: ±14.433The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlNon-English
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 17,674 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,718 anonymous pairwise votes.
Higher measured value1,447.544
95% confidence interval: ±5.655The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,406.687
95% confidence interval: ±8.36The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlPolish
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 491 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 226 anonymous pairwise votes.
Higher measured value1,440.102
95% confidence interval: ±26.329The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,407.955
95% confidence interval: ±38.858The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlRussian
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 3,153 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,143 anonymous pairwise votes.
Higher measured value1,471.763
95% confidence interval: ±10.923The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,415.692
95% confidence interval: ±17.832The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlSoftware and IT services
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 12,308 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,320 anonymous pairwise votes.
Higher measured value1,504.552
95% confidence interval: ±6.385The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,470.76
95% confidence interval: ±9.541The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlSpanish
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 907 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 377 anonymous pairwise votes.
Higher measured value1,453.407
95% confidence interval: ±20.651The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,386.845
95% confidence interval: ±32.418The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlWriting, literature and language
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5: Snapshot: claude-sonnet-5-high, Reasoning: high, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlClaude Sonnet 5: Style-controlled Arena rating from 8,238 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,734 anonymous pairwise votes.
Higher measured value1,451.744
95% confidence interval: ±7.447The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,405.944
95% confidence interval: ±11.74The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026

Key to the marks:better valuebetter, but not conclusivetie

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Your workload, budget, and required context length matter most. A coding benchmark says little about visual understanding or agent performance.

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