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Head-to-head comparison

GPT-5.6 Terra 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 GPT-5.6 Terra and Mistral Medium 3.5
AttributeGPT-5.6 TerraMistral Medium 3.5
ProviderOpenAIMistral AI
ReleasedJun 26, 2026Apr 28, 2026
AvailabilityActiveActive
Model typeProprietaryOpen Weights
ParametersNot publishedNot published
ArchitectureNot publishedNot published
Context window1,050,000 tokens256,000 tokens
Knowledge cutoffFebruary 16, 2026Not published
Technical sourcesModel, Context, Knowledge cutoffModel

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 GPT-5.6 Terra and Mistral Medium 3.5
Price typeGPT-5.6 TerraMistral Medium 3.5
API input$2 ≤272K / $4 >272K$1.5
API output$12 ≤272K / $18 >272K$7.5
Cache read$0.2 ≤272K / $0.4 >272KNot listed
Cache write (5 min.)$2.5 ≤272K / $5 >272KNot listed
Cache write (1 hr.)Not listedNot listed
Price verified08/11/2026 Source07/30/2026 Source
GPT-5.6 TerraMistral Medium 3.5
API inputUSD per 1M tokens, base tier
GPT-5.6 Terra$2
Mistral Medium 3.5Lower price$1.5
API outputUSD per 1M tokens, base tier
GPT-5.6 Terra$12
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 GPT-5.6 Terra and Mistral Medium 3.5
ModelProviderPurchase route and tariffInput per 1M tokensOutput per 1M tokensSource
GPT-5.6 TerraOpenAIDirect from developerUp to 272,000 context tokens$2$12Source08/11/2026
OpenAIDirect from developerAbove 272,000 context tokens$4$18Source08/11/2026
Amazon BedrockVia OpenRouteramazon-bedrock/us-east-1$2.2$13.2Source09/07/2026
AzureVia OpenRouterazure$2$12Source09/07/2026
AzureVia OpenRouterazure/eu$2.2$13.2Source09/07/2026
AzureVia OpenRouterazure/us$2.2$13.2Source09/07/2026
OpenAIVia OpenRouteropenai$2$12Source09/07/2026
OpenAIVia OpenRouteropenai/fast$4$24Source09/07/2026
OpenAIVia OpenRouteropenai/flexLowest listed price: $1Lowest listed price: $6Source09/07/2026
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: $7.5Source09/07/2026
MistralVia OpenRoutermistral/eu$1.65$8.25Source09/07/2026
MistralVia OpenRoutermistral/zdrLowest listed price: $1.5Lowest listed price: $7.5Source09/07/2026

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.

GPT-5.6 TerraMistral Medium 3.5
LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,466.233
Mistral Medium 3.51,426.98
LMArena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,467.133
Mistral Medium 3.51,431.113
LMArena Text, Style ControlChinese. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,518.544
Mistral Medium 3.51,448.299
LMArena Text, Style ControlCoding. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,518.601
Mistral Medium 3.51,478.845
LMArena Text, Style ControlCreative writing. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,426.255
Mistral Medium 3.51,396.971
LMArena Text, Style ControlEnglish. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,470.27
Mistral Medium 3.51,444.656
LMArena Text, Style ControlEntertainment, sports and media. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,434.209
Mistral Medium 3.51,396.875
LMArena Text, Style ControlExcluding ties. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,473.839
Mistral Medium 3.51,421.17
LMArena Text, Style ControlExpert prompts. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,506.472
Mistral Medium 3.51,438.278
LMArena Text, Style ControlFrench. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,505.538
Mistral Medium 3.51,436.08
LMArena Text, Style ControlGerman. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,488.494
Mistral Medium 3.51,442.607
LMArena Text, Style ControlHard prompts. Higher is better. Test setup not documented as identical
GPT-5.6 TerraHigher measured value1,490.153
Mistral Medium 3.51,445.592

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for GPT-5.6 Terra and Mistral Medium 3.5
Benchmark and taskGPT-5.6 TerraMistral 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 23,942 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 11,017 anonymous pairwise votes.
Higher measured value1,466.233
95% confidence interval: ±5.062The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 4,559 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,148 anonymous pairwise votes.
Higher measured value1,467.133
95% confidence interval: ±9.403The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 1,627 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 500 anonymous pairwise votes.
Higher measured value1,518.544
95% confidence interval: ±15.369The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 6,608 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,079 anonymous pairwise votes.
Higher measured value1,518.601
95% confidence interval: ±8.056The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 4,918 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,862 anonymous pairwise votes.
Higher measured value1,426.255
95% confidence interval: ±9.432The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 9,928 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,299 anonymous pairwise votes.
Higher measured value1,470.27
95% confidence interval: ±6.803The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 6,035 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,453 anonymous pairwise votes.
Higher measured value1,434.209
95% confidence interval: ±8.525The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 17,956 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 8,299 anonymous pairwise votes.
Higher measured value1,473.839
95% confidence interval: ±6.594The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 2,711 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,110 anonymous pairwise votes.
Higher measured value1,506.472
95% confidence interval: ±11.876The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 778 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 438 anonymous pairwise votes.
Higher measured value1,505.538
95% confidence interval: ±22.869The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 382 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 170 anonymous pairwise votes.
Higher measured value1,488.494
95% confidence interval: ±30.154The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 15,816 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 7,154 anonymous pairwise votes.
Higher measured value1,490.153
95% confidence interval: ±5.922The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 6,463 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,629 anonymous pairwise votes.
Higher measured value1,488.472
95% confidence interval: ±8.092The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 8,484 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 3,561 anonymous pairwise votes.
Higher measured value1,462.94
95% confidence interval: ±7.323The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 507 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 178 anonymous pairwise votes.
Higher measured value1,416.233
95% confidence interval: ±26.862The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 2,012 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 839 anonymous pairwise votes.
Higher measured value1,482.71
95% confidence interval: ±14.031The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 3,853 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,823 anonymous pairwise votes.
Higher measured value1,471.733
95% confidence interval: ±10.065The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 11,195 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,661 anonymous pairwise votes.
Higher measured value1,469.496
95% confidence interval: ±6.879The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 1,011 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 539 anonymous pairwise votes.
Higher measured value1,481.765
95% confidence interval: ±18.298The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 1,255 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 597 anonymous pairwise votes.
Higher measured value1,493.251
95% confidence interval: ±16.992The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 1,777 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 802 anonymous pairwise votes.
Higher measured value1,457.251
95% confidence interval: ±14.871The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 4,011 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,803 anonymous pairwise votes.
Higher measured value1,472.964
95% confidence interval: ±9.983The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 14,012 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 5,718 anonymous pairwise votes.
Higher measured value1,457.182
95% confidence interval: ±6.084The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 370 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 226 anonymous pairwise votes.
Higher measured value1,454.108
95% confidence interval: ±29.918The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 2,447 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 1,143 anonymous pairwise votes.
Higher measured value1,468.509
95% confidence interval: ±12.279The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 9,456 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 4,320 anonymous pairwise votes.
Higher measured value1,504.665
95% confidence interval: ±6.999The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 668 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 377 anonymous pairwise votes.
Higher measured value1,466.207
95% confidence interval: ±23.702The 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 betterGPT-5.6 Terra: Snapshot: gpt-5.6-terra-xhigh, Reasoning: xhigh, Harness: Arena text, style control
Mistral Medium 3.5: Snapshot: mistral-medium-3.5, Harness: Arena text, style controlGPT-5.6 Terra: Style-controlled Arena rating from 6,463 anonymous pairwise votes.Mistral Medium 3.5: Style-controlled Arena rating from 2,734 anonymous pairwise votes.
Higher measured value1,449.136
95% confidence interval: ±8.227The 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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