Noometry

Model comparison

Claude Opus 4.1 vs Mistral Small 3.2

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 31.2 on the Noometry Index. Mistral Small 3.2 costs 226× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Last verified . 4 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

Mistral Small 3.2 Mistral AI

31.2

Rank #280 Confirmed

Summary

  • They share 4 benchmarks with published results for both. Claude Opus 4.1 scores higher in 3 categories and Mistral Small 3.2 in 1 category; 4 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Opus 4.1 leads 62.4 to 45.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.9% for Claude Opus 4.1 and 30.3% for Mistral Small 3.2.
  • Mistral Small 3.2 is cheaper at $0.0938 / $0.25 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
  • Mistral Small 3.2 accepts more context: 256K tokens versus 200K.
  • Mistral Small 3.2 has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4.1Mistral Small 3.2
ProviderAnthropicMistral AI
Noometry Index41.031.2
Released2025-08-052025-06-20
WeightsProprietaryOpen
Context window200K256K
Max output32K16K
Input $ / M tokens$15$0.0938
Output $ / M tokens$75$0.25
Results tracked486

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Category by category

Coding Not comparable

Claude Opus 4.1: 44.4 (#73), Mistral Small 3.2: —

BenchmarkClaude Opus 4.1Mistral Small 3.2
SWE-bench Verified73.3%—
LMArena WebDev1390—
WeirdML45.9%—
LMArena Coding1479—
ALE-Bench674.77—
AlgoTune1.34—

Agentic & Tool Use Not comparable

Claude Opus 4.1: 35.0 (#41), Mistral Small 3.2: —

BenchmarkClaude Opus 4.1Mistral Small 3.2
Terminal-Bench38%—
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), Mistral Small 3.2: 18.1 (#287)

BenchmarkClaude Opus 4.1Mistral Small 3.2
Chess Puzzles7%1%
Epoch Capabilities Index144.12131.74
SimpleBench60%—
Kagi LLM Benchmark—40.4%
EnigmaEval7.2%—
EBR-Bench7.9%—
LMArena Hard Prompts1443—
Mystery Game Puzzles21%—
DTBench80%—
LMCA37.1%—
ForecastBench62—

Math Mistral Small 3.2 leads

Claude Opus 4.1: 22.3 (#277), Mistral Small 3.2: 26.3 (#260)

BenchmarkClaude Opus 4.1Mistral Small 3.2
OTIS Mock AIME 2024-202568.9%30.3%
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
LMArena Math1431—
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), Mistral Small 3.2: 26.7 (#256)

BenchmarkClaude Opus 4.1Mistral Small 3.2
GPQA Diamond77.3%49.1%
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—
LMArena Expert1439—

Multimodal Not comparable

Claude Opus 4.1: 26.8 (#119), Mistral Small 3.2: —

BenchmarkClaude Opus 4.1Mistral Small 3.2
VPCT35%—

Multilingual Not comparable

Claude Opus 4.1: 52.0 (#95), Mistral Small 3.2: —

BenchmarkClaude Opus 4.1Mistral Small 3.2
LMArena Non-English1405—
LMArena Chinese1427—
LMArena French1431—
LMArena German1413—
LMArena Japanese1378—
LMArena Korean1380—
LMArena Russian1422—
LMArena Spanish1448—

Instruction Following Not comparable

Claude Opus 4.1: 75.6 (#58), Mistral Small 3.2: —

BenchmarkClaude Opus 4.1Mistral Small 3.2
LMArena Instruction Following1435—

Long Context Not comparable

Claude Opus 4.1: 44.5 (#63), Mistral Small 3.2: —

BenchmarkClaude Opus 4.1Mistral Small 3.2
LMArena Longer Query1455—

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.4 (#74), Mistral Small 3.2: 45.0 (#224)

BenchmarkClaude Opus 4.1Mistral Small 3.2
LMArena Text1419—
LMArena Creative Writing1412—
Short-Story Creative Writing84.7%—
EQ-Bench Creative Writing—1255
LMArena Multi-Turn1444—

Frequently asked questions

Is Claude Opus 4.1 better than Mistral Small 3.2?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 31.2 on the Noometry Index. Mistral Small 3.2 costs 226× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.1 or Mistral Small 3.2?

Mistral Small 3.2 is cheaper. It lists at $0.0938 per million input tokens and $0.25 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

Which has the bigger context window?

Mistral Small 3.2 does, with 256K tokens against 200K.

How many benchmarks do Claude Opus 4.1 and Mistral Small 3.2 share?

4 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Mistral Small 3.2 has 6.

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