Pairwise benchmark snapshot · Aug 16, 2026

Claude Opus 4.5 vs Mistral Large 3 benchmark

Name: Claude Opus 4.5 vs Mistral Large 3 AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Claude Opus 4.5 (Anthropic) and Mistral Large 3 (Mistral) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Opus 4.5 is ahead by 112 points (1,568 vs 1,456; seed-bootstrap (Aug 1, 2026)). On SWE-bench coding, Claude Opus 4.5 resolves 76.8% versus 55.4% (seed-bootstrap (Aug 1, 2026)). Mistral Large 3 streams faster (112 tok/s) while Mistral Large 3 is the cheaper output token ($6/1M). Claude Opus 4.5 has the larger context window (200k tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Anthropic

Claude Opus 4.5

Anthropic frontier coding and computer-use model. SWE-bench leader on the official mini-SWE-agent harness in the Feb 2026 refresh.

Elo 1,568$25/1M out

Mistral

Mistral Large 3

Mistral European flagship with strong function calling.

Elo 1,456$6/1M out

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Quick vs:vs Claude Opus 4.6 vs Claude Sonnet 4.5 vs Claude 3.7 Sonnet vs GPT-5

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Opus 4.5 (6)vsMistral Large 3 (4)

Claude Opus 4.5: 6W (60%)Overall: Claude Opus 4.5Mistral Large 3: 4W (40%)

← Claude Opus 4.5Mistral Large 3 →

Claude Opus 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,568vs1,456

Coding Elo

1,574vs—

SWE-bench

76.8%vs55.4%

LiveBench

71.2%vs61.8%

GPQA Diamond

84.1%vs74.1%

Claude Opus 4.5: 5WMistral Large 3: 0W

Mistral Large 3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

62 tok/svs112 tok/s

Time to first token

380 msvs190 ms

Claude Opus 4.5: 0WMistral Large 3: 2W

Mistral Large 3 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$25/1Mvs$6/1M

Input price

$5/1Mvs$2/1M

Context window

200kvs128k

Claude Opus 4.5: 1WMistral Large 3: 2W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageClaude Opus 4.5 4/6

Preference Elo

Claude Opus 4.5

112 pts advantage

Throughput Speed

Mistral Large 3

50 tok/s faster

Price Efficiency

Mistral Large 3

$19.00/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

+8%1,568

EloHigh is better

1,456

Code Elo

High is better

1,574

Code EloHigh is better

—

LiveBench

High is better

+15%71.2%

LiveBenchHigh is better

61.8%

SWE-bench

High is better

+39%76.8%

SWE-benchHigh is better

55.4%

GPQA

High is better

+13%84.1%

GPQAHigh is better

74.1%

TTFT

Low is better

380 ms

TTFTLow is better

190 ms+100%

Speed

High is better

62 tok/s

SpeedHigh is better

112 tok/s+81%

In $

Low is better

$5/1M

In $Low is better

$2/1M+150%

Out $

Low is better

$25/1M

Out $Low is better

$6/1M+317%

Context

High is better

+56%200k

ContextHigh is better

128k

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 71% with Mistral Large 3

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Claude Opus 4.5$550.00 / mo

In: $175.00Out: $375.00

Mistral Large 3$160.00 / mo

In: $70.00Out: $90.00

Estimated Cost Delta

Mistral Large 3 is estimated to save $390.00/month ($4,680/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Claude Opus 4.5:Pick Claude Opus 4.5 when repo-level coding accuracy is the constraint.
2
Mistral Large 3:Pick Mistral Large 3 when you are optimizing output cost.
3
Mistral Large 3:Pick Mistral Large 3 when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Opus 4.5

Higher SWE-bench (76.8%).

High-volume chatMistral Large 3

Lower output list price ($6/1M).

Voice / low-latency UIMistral Large 3

Lower TTFT (190 ms).

Long-document RAGClaude Opus 4.5

Larger window (200k).

Screenshots / visionClaude Opus 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Opus 4.5	Higher SWE-bench (76.8%).
High-volume chat	Mistral Large 3	Lower output list price ($6/1M).
Voice / low-latency UI	Mistral Large 3	Lower TTFT (190 ms).
Long-document RAG	Claude Opus 4.5	Larger window (200k).
Screenshots / vision	Claude Opus 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Related Editorial Dispatches & Benchmark Notes

View all news

launchFeb 20, 2026

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

The Feb refresh made 4.5 a coding reference. Newer Opus SKUs exist; this row stays as the dated harness point.

launchJan 18, 2026

Mistral Large 3: the European flagship with function calling

Jan 2026. Not the Elo crown. Useful when residency and tools matter more than Arena.

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LIVE

Anthropic

Claude Opus 4.5

Elo 1,568

LiveBench71.2%

SWE-bench76.8%

Speed62 tok/s

Output cost$25/1M

Mistral

Mistral Large 3

Elo 1,456

LiveBench61.8%

SWE-bench55.4%

Speed112 tok/s

Output cost$6/1M

Frequently Asked Questions

Which is better overall, Claude Opus 4.5 or Mistral Large 3?: Claude Opus 4.5 has the higher preference Elo in our latest snapshot (1,568). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude Opus 4.5 or Mistral Large 3?: Claude Opus 4.5 leads SWE-bench at 76.8% vs 55.4%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Mistral Large 3 output tokens are $6/1M versus $25/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Opus 4.5 or Mistral Large 3?: Mistral Large 3 has the lower time-to-first-token (190 ms vs 380 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: Claude Opus 4.5 accepts 200k tokens versus 128k.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Opus 4.5 and Mistral Large 3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude Opus 4.5 matchups →|All Mistral Large 3 matchups →

Claude Opus 4.5 vs Claude Opus 4 (previous opus)Claude Opus 4.5 vs Claude Opus 4.6 (next opus)Mistral Large 3 vs Codestral 25.01 (previous mistral)Claude Sonnet 5 vs Claude Opus 4.5 Claude Opus 4.8 vs Claude Opus 4.5 Claude Sonnet 4.5 vs Claude Opus 4.5

Claude Opus 4.5 vs Mistral Large 3 benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Opus 4.5 (6)vsMistral Large 3 (4)

Claude Opus 4.5: 6W (60%)Overall: Claude Opus 4.5Mistral Large 3: 4W (40%)

← Claude Opus 4.5Mistral Large 3 →

Claude Opus 4.5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,568vs1,456

Coding Elo

1,574vs—

SWE-bench

76.8%vs55.4%

LiveBench

71.2%vs61.8%

GPQA Diamond

84.1%vs74.1%

Claude Opus 4.5: 5WMistral Large 3: 0W

Mistral Large 3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

62 tok/svs112 tok/s

Time to first token

380 msvs190 ms

Claude Opus 4.5: 0WMistral Large 3: 2W

Mistral Large 3 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$25/1Mvs$6/1M

Input price

$5/1Mvs$2/1M

Context window

200kvs128k

Claude Opus 4.5: 1WMistral Large 3: 2W

Recommended Workload Routing

Repo / coding agentsClaude Opus 4.5

Higher SWE-bench (76.8%).

High-volume chatMistral Large 3

Lower output list price ($6/1M).

Voice / low-latency UIMistral Large 3

Lower TTFT (190 ms).

Long-document RAGClaude Opus 4.5

Larger window (200k).

Screenshots / visionClaude Opus 4.5

Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	Claude Opus 4.5	Higher SWE-bench (76.8%).
High-volume chat	Mistral Large 3	Lower output list price ($6/1M).
Voice / low-latency UI	Mistral Large 3	Lower TTFT (190 ms).
Long-document RAG	Claude Opus 4.5	Larger window (200k).
Screenshots / vision	Claude Opus 4.5	Both accept images. Defaulting to the higher-Elo side (Claude Opus 4.5).

Frequently Asked Questions

Which is better overall, Claude Opus 4.5 or Mistral Large 3?

Claude Opus 4.5 has the higher preference Elo in our latest snapshot (1,568). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Claude Opus 4.5 or Mistral Large 3?

Claude Opus 4.5 leads SWE-bench at 76.8% vs 55.4%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Mistral Large 3 output tokens are $6/1M versus $25/1M. Input prices and retry rates still move the real bill.

Which is faster, Claude Opus 4.5 or Mistral Large 3?

Mistral Large 3 has the lower time-to-first-token (190 ms vs 380 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

Claude Opus 4.5 accepts 200k tokens versus 128k.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Opus 4.5 and Mistral Large 3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Opus 4.5

Mistral Large 3

Mistral Large 3

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

Mistral Large 3: the European flagship with function calling

Cast Your Matchup Vote

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CompareLLM Matrix

Claude Opus 4.5

Mistral Large 3

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

Claude Opus 4.5

Mistral Large 3

Mistral Large 3

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite

Mistral Large 3: the European flagship with function calling

Cast Your Matchup Vote

Community Discussions (0)

Share card

CompareLLM Matrix

Claude Opus 4.5

Mistral Large 3

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons