Head-to-head comparison

Claude Sonnet 5.5 vs. Mistral Large 3

Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.

shared result series: 42
distinct benchmarks: 4
latest retrieval: 2026-10-15

First modelSecond model

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 5.5 and Mistral Large 3
Attribute	Claude Sonnet 5.5	Mistral Large 3
Provider	Anthropic	Mistral AI
Released	Sep 28, 2026	Dec 2, 2025
Availability	Active	Active
Model type	Proprietary	Open Weights
Parameters	Not published	675B, 41B active
Architecture	Not published	Mixture of Experts
Context window	1,000,000 tokens	262,144 tokens
Knowledge cutoff	June 2026	Not published
Technical sources	Model	Model, Context

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 5.5 and Mistral Large 3
Price type	Claude Sonnet 5.5	Mistral Large 3
API input	$2	$0.5
API output	$10	$1.5
Cache read	$0.1	Not listed
Cache write (5 min.)	$2.5	Not listed
Cache write (1 hr.)	$4	Not listed
Price verified	10/13/2026 Source	09/22/2026 Source

Claude Sonnet 5.5Mistral Large 3

API inputUSD per 1M tokens, base tier

Claude Sonnet 5.5$2

Mistral Large 3$0.5

API outputUSD per 1M tokens, base tier

Claude Sonnet 5.5$10

Mistral Large 3$1.5

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 5.5 and Mistral Large 3
Model	Provider	Purchase route and tariff	Input per 1M tokens	Output per 1M tokens	Source
Claude Sonnet 5.5	Anthropic	Direct from developerStandard API	Lowest listed price: $2	Lowest listed price: $10	Source10/13/2026
	Amazon Bedrock	Via OpenRouteramazon-bedrock	Lowest listed price: $2	Lowest listed price: $10	Source10/17/2026
	Anthropic	Via OpenRouteranthropic	Lowest listed price: $2	Lowest listed price: $10	Source10/17/2026
	Azure	Via OpenRouterazure/global	Lowest listed price: $2	Lowest listed price: $10	Source10/17/2026
	Azure	Via OpenRouterazure/us	$2.2	$11	Source10/17/2026
	Claude Platform on AWS	Via OpenRouterclaude-on-aws	Lowest listed price: $2	Lowest listed price: $10	Source10/17/2026
	Google	Via OpenRoutergoogle-vertex/europe	$2.2	$11	Source10/17/2026
	Google	Via OpenRoutergoogle-vertex/global	Lowest listed price: $2	Lowest listed price: $10	Source10/17/2026
	Google	Via OpenRoutergoogle-vertex/us	$2.2	$11	Source10/17/2026
Mistral Large 3	Mistral AI	Direct from developerStandard API	Lowest listed price: $0.5	Lowest listed price: $1.5	Source09/22/2026
	Mistral	Via OpenRoutermistral/eu	$0.55	$1.65	Source10/17/2026
	Mistral	Via OpenRoutermistral/zdr	Lowest listed price: $0.5	Lowest listed price: $1.5	Source10/17/2026

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 5.5Mistral Large 3

LMArena Code Arena WebDevOverall. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,712.984

Mistral Large 31,230.205

LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,475.266

Mistral Large 31,414.136

LMArena Vision, Style ControlOverall. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,266.189

Mistral Large 31,199.757

SAGEOverall. Higher is better. Test setup not documented as identical

Claude Sonnet 5.551.772 %

Mistral Large 324.595 %

LMArena Code Arena WebDevOverall. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,773.661

Mistral Large 31,230.205

LMArena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,466.655

Mistral Large 31,409.853

LMArena Vision, Style ControlDiagram. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,320.26

Mistral Large 31,235.106

SAGEAutomata. Higher is better. Test setup not documented as identical

Claude Sonnet 5.543.254 %

Mistral Large 311.905 %

LMArena Code Arena WebDevImage to webdev. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,740.047

Mistral Large 31,361.78

LMArena Text, Style ControlChinese. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,546.494

Mistral Large 31,432.609

LMArena Vision, Style ControlEnglish. Higher is better. Test setup not documented as identical

Claude Sonnet 5.51,266.361

Mistral Large 31,210.278

SAGECalculus. Higher is better. Test setup not documented as identical

Claude Sonnet 5.578.395 %

Mistral Large 30 %

Key to the marks:better valuebetter, but not conclusivetie

Our model tests

Our tests

SVG short test

One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.

Shared test round: 4ae5d8eeb9a9

Claude Sonnet 5.5

Unavailable in this round

Mistral Large 3

API request failed. The model was not evaluated.

Earlier tests

Pelican on a bicycle

A community classic for free-form SVG drawing.

Claude Sonnet 5.5

Reasoning (requested): high

Current attempt

Run date: Oct 1, 2026
API provider: openrouter
Requested API model: anthropic/claude-sonnet-5.5
API model reported in response: anthropic/claude-sonnet-5.5
Reasoning setting: high
Pinned endpoint: Anthropic | anthropic/claude-sonnet-5.5-20260928
Temperature: Provider default
Token limit including reasoning: 8,192 tokens
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating
Response time: 28.2 s

Visually reviewed. This individual test does not establish overall model quality.

Mistral Large 3

Reasoning (model default): no reasoning mode Source

Current attempt

Run date: Oct 1, 2026
API provider: openrouter
Requested API model: mistralai/mistral-large-2512
API model reported in response: mistralai/mistral-large-2512
Reasoning setting: not specified
Pinned endpoint: Mistral | mistralai/mistral-large-2512
Temperature: Provider default
Token limit including reasoning: 8,192 tokens
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating
Response time: 14.2 s

Visually reviewed. This individual test does not establish overall model quality.

Earlier attempts (1)

Sep 7, 2026API request failedReasoning setting: not specified

Prompt and test conditions

Generate an SVG of a pelican riding a bicycle

Token limit including reasoning: 8,192 tokens

Task origin (Simon Willison)

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.

The standard price table uses direct developer rates. The provider comparison labels OpenRouter endpoints, regions, and special tariffs separately.

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.

More matchups

Compare Claude Sonnet 5.5 and Mistral Large 3 with other leading models using the same data and benchmark logic.

View the complete LLM comparison

Benchmark scores for Claude Sonnet 5.5 and Mistral Large 3
Benchmark and task	Claude Sonnet 5.5	Mistral Large 3	Source
LMArena Code Arena WebDevOverall Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-high, Reasoning: high, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 4,605 published pairwise votes.Mistral Large 3: Arena rating from 839 published pairwise votes.	Higher measured value1,712.984 95% confidence interval: ±10.362The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,230.205 95% confidence interval: ±25.485The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 6,254 published pairwise votes.Mistral Large 3: Arena rating from 83,498 published pairwise votes.	Higher measured value1,475.266 95% confidence interval: ±7.984The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,414.136 95% confidence interval: ±2.865The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
LMArena Vision, Style ControlOverall Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Vision, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Vision, style controlClaude Sonnet 5.5: Arena rating from 2,068 published pairwise votes.Mistral Large 3: Arena rating from 8,643 published pairwise votes.	Higher measured value1,266.189 95% confidence interval: ±13.713The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,199.757 95% confidence interval: ±7.981The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/09/2026
SAGEOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterClaude Sonnet 5.5: Compute: max, Temperature: 1, Output limit: 128,000 tokens Mistral Large 3: Temperature: 1, Output limit: 30,000 tokens	Higher measured value51.772 %	24.595 %	Vals AI Source details Data as of: 10/08/2026
LMArena Code Arena WebDevOverall Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 2,858 published pairwise votes.Mistral Large 3: Arena rating from 839 published pairwise votes.	Higher measured value1,773.661 95% confidence interval: ±13.85The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,230.205 95% confidence interval: ±25.485The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 1,089 published pairwise votes.Mistral Large 3: Arena rating from 15,540 published pairwise votes.	Higher measured value1,466.655 95% confidence interval: ±17.914The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,409.853 95% confidence interval: ±5.362The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
LMArena Vision, Style ControlDiagram Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Vision, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Vision, style controlClaude Sonnet 5.5: Arena rating from 514 published pairwise votes.Mistral Large 3: Arena rating from 2,169 published pairwise votes.	Higher measured value1,320.26 95% confidence interval: ±26.586The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,235.106 95% confidence interval: ±13.517The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/09/2026
SAGEAutomata Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterClaude Sonnet 5.5: Compute: max, Temperature: 1, Output limit: 128,000 tokens Mistral Large 3: Temperature: 1, Output limit: 30,000 tokens	Higher measured value43.254 %	11.905 %	Vals AI Source details Data as of: 10/08/2026
LMArena Code Arena WebDevImage to webdev Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 1,074 published pairwise votes.Mistral Large 3: Arena rating from 1,413 published pairwise votes.	Higher measured value1,740.047 95% confidence interval: ±19.9The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,361.78 95% confidence interval: ±17.387The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/09/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 508 published pairwise votes.Mistral Large 3: Arena rating from 6,341 published pairwise votes.	Higher measured value1,546.494 95% confidence interval: ±26.454The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,432.609 95% confidence interval: ±7.919The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
LMArena Vision, Style ControlEnglish Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Vision, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Vision, style controlClaude Sonnet 5.5: Arena rating from 657 published pairwise votes.Mistral Large 3: Arena rating from 2,983 published pairwise votes.	Higher measured value1,266.361 95% confidence interval: ±23.51The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,210.278 95% confidence interval: ±12.173The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/09/2026
SAGECalculus Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterClaude Sonnet 5.5: Compute: max, Temperature: 1, Output limit: 128,000 tokens Mistral Large 3: Temperature: 1, Output limit: 30,000 tokens	Higher measured value78.395 %	0 %	Vals AI Source details Data as of: 10/08/2026
LMArena Code Arena WebDevWebdev Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-high, Reasoning: high, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 4,605 published pairwise votes.Mistral Large 3: Arena rating from 839 published pairwise votes.	Higher measured value1,712.984 95% confidence interval: ±10.362The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,230.205 95% confidence interval: ±25.485The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 1,506 published pairwise votes.Mistral Large 3: Arena rating from 21,009 published pairwise votes.	Higher measured value1,526.562 95% confidence interval: ±15.395The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,470.833 95% confidence interval: ±4.783The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
LMArena Vision, Style ControlHomework Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Vision, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Vision, style controlClaude Sonnet 5.5: Arena rating from 295 published pairwise votes.Mistral Large 3: Arena rating from 891 published pairwise votes.	Higher measured value1,318.835 95% confidence interval: ±34.105The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,211.931 95% confidence interval: ±20.61The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/09/2026
SAGELinear Algebra Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterClaude Sonnet 5.5: Compute: max, Temperature: 1, Output limit: 128,000 tokens Mistral Large 3: Temperature: 1, Output limit: 30,000 tokens	Higher measured value70.792 %	44.419 %	Vals AI Source details Data as of: 10/08/2026
LMArena Code Arena WebDevWebdev Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 2,858 published pairwise votes.Mistral Large 3: Arena rating from 839 published pairwise votes.	Higher measured value1,773.661 95% confidence interval: ±13.85The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,230.205 95% confidence interval: ±25.485The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 1,405 published pairwise votes.Mistral Large 3: Arena rating from 14,972 published pairwise votes.	Higher measured value1,465.364 95% confidence interval: ±16.888The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,373.958 95% confidence interval: ±5.611The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
LMArena Vision, Style ControlOcr Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Vision, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Vision, style controlClaude Sonnet 5.5: Arena rating from 1,451 published pairwise votes.Mistral Large 3: Arena rating from 5,778 published pairwise votes.	Higher measured value1,280.319 95% confidence interval: ±15.866The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,215.499 95% confidence interval: ±8.709The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/09/2026
SAGEPartial Differential Equations Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterClaude Sonnet 5.5: Compute: max, Temperature: 1, Output limit: 128,000 tokens Mistral Large 3: Temperature: 1, Output limit: 30,000 tokens	Higher measured value41.27 %	17.46 %	Vals AI Source details Data as of: 10/08/2026
LMArena Code Arena WebDevWebdev-html Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-high, Reasoning: high, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 707 published pairwise votes.Mistral Large 3: Arena rating from 839 published pairwise votes.	Higher measured value1,710.04 95% confidence interval: ±25.597The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,238.427 95% confidence interval: ±26.132The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 2,393 published pairwise votes.Mistral Large 3: Arena rating from 34,656 published pairwise votes.	Higher measured value1,490.413 95% confidence interval: ±12.395The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,426.99 95% confidence interval: ±3.961The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
LMArena Code Arena WebDevWebdev-html Test details Test setup not documented as identicalNo direct winnerVersion: webdevMetric: WebDev Arena Bradley-Terry ratingScoring: Higher is betterClaude Sonnet 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Code Arena WebDev Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Code Arena WebDevClaude Sonnet 5.5: Arena rating from 423 published pairwise votes.Mistral Large 3: Arena rating from 839 published pairwise votes.	Higher measured value1,737.658 95% confidence interval: ±36.636The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,238.427 95% confidence interval: ±26.132The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 1,576 published pairwise votes.Mistral Large 3: Arena rating from 18,448 published pairwise votes.	Higher measured value1,460.568 95% confidence interval: ±15.574The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,372.089 95% confidence interval: ±5.132The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 4,571 published pairwise votes.Mistral Large 3: Arena rating from 61,071 published pairwise votes.	Higher measured value1,484.539 95% confidence interval: ±10.917The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,401.523 95% confidence interval: ±3.976The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 646 published pairwise votes.Mistral Large 3: Arena rating from 7,976 published pairwise votes.	Higher measured value1,540.048 95% confidence interval: ±22.903The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,427.286 95% confidence interval: ±7.215The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 234 published pairwise votes.Mistral Large 3: Arena rating from 2,379 published pairwise votes.	Higher measured value1,506.412 95% confidence interval: ±37.292The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,432.543 95% confidence interval: ±13.786The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 3,886 published pairwise votes.Mistral Large 3: Arena rating from 50,980 published pairwise votes.	Higher measured value1,504.575 95% confidence interval: ±9.87The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,432.155 95% confidence interval: ±3.56The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 1,488 published pairwise votes.Mistral Large 3: Arena rating from 21,186 published pairwise votes.	Higher measured value1,513.396 95% confidence interval: ±15.55The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,439.589 95% confidence interval: ±4.785The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 2,124 published pairwise votes.Mistral Large 3: Arena rating from 26,939 published pairwise votes.	Higher measured value1,483.211 95% confidence interval: ±13.051The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,401.72 95% confidence interval: ±4.374The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 541 published pairwise votes.Mistral Large 3: Arena rating from 6,347 published pairwise votes.	Higher measured value1,495.003 95% confidence interval: ±25.225The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,420.684 95% confidence interval: ±7.935The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 1,089 published pairwise votes.Mistral Large 3: Arena rating from 13,640 published pairwise votes.	Higher measured value1,491.487 95% confidence interval: ±18.249The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,428.444 95% confidence interval: ±5.571The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 2,627 published pairwise votes.Mistral Large 3: Arena rating from 31,737 published pairwise votes.	Higher measured value1,500.318 95% confidence interval: ±12.253The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,417.413 95% confidence interval: ±4.313The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 318 published pairwise votes.Mistral Large 3: Arena rating from 4,742 published pairwise votes.	Higher measured value1,509.977 95% confidence interval: ±32.41The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,400.815 95% confidence interval: ±8.893The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 324 published pairwise votes.Mistral Large 3: Arena rating from 4,407 published pairwise votes.	Higher measured value1,519.842 95% confidence interval: ±31.806The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,413.768 95% confidence interval: ±9.421The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 432 published pairwise votes.Mistral Large 3: Arena rating from 5,848 published pairwise votes.	Higher measured value1,470.002 95% confidence interval: ±28.167The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,431.33 95% confidence interval: ±8.313The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 919 published pairwise votes.Mistral Large 3: Arena rating from 14,021 published pairwise votes.	Higher measured value1,471.318 95% confidence interval: ±19.351The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,420.254 95% confidence interval: ±5.589The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 3,861 published pairwise votes.Mistral Large 3: Arena rating from 48,836 published pairwise votes.	Higher measured value1,458.177 95% confidence interval: ±9.868The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,398.12 95% confidence interval: ±3.514The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 880 published pairwise votes.Mistral Large 3: Arena rating from 10,065 published pairwise votes.	Higher measured value1,456.017 95% confidence interval: ±19.884The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,408.261 95% confidence interval: ±6.27The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026
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 5.5: Snapshot: claude-sonnet-5.5-xhigh, Reasoning: xhigh, Harness: Arena Text, style control Mistral Large 3: Snapshot: mistral-large-3, Harness: Arena Text, style controlClaude Sonnet 5.5: Arena rating from 2,184 published pairwise votes.Mistral Large 3: Arena rating from 31,163 published pairwise votes.	Higher measured value1,514.674 95% confidence interval: ±12.864The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	1,456.413 95% confidence interval: ±4.147The Arena score measures human preference rather than a fixed capability test. The confidence interval, Arena category, and model configuration are part of the result.	LMArena Source details Data as of: 10/13/2026

Claude Sonnet 5.5 vs. Mistral Large 3

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Claude Sonnet 5.5

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