Noometry

Model comparison

Claude Opus 4.1 vs Mistral Nemo

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 26.4 on the Noometry Index. Mistral Nemo costs 200× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Last verified . 3 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

Mistral Nemo Mistral AI

26.4

Rank #337 Confirmed

Summary

  • They share 3 benchmarks with published results for both. Claude Opus 4.1 scores higher in 4 categories and Mistral Nemo in 1 category; 5 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Opus 4.1 leads 62.4 to 28.5.
  • The biggest single-benchmark swing is GPQA Diamond: 77.3% for Claude Opus 4.1 and 29.9% for Mistral Nemo.
  • Mistral Nemo is cheaper at $0.15 / $0.15 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
  • Claude Opus 4.1 accepts more context: 200K tokens versus 128K.
  • Mistral Nemo has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4.1Mistral Nemo
ProviderAnthropicMistral AI
Noometry Index41.026.4
Released2025-08-052024-07-01
WeightsProprietaryOpen
Context window200K128K
Max output32K128K
Input $ / M tokens$15$0.15
Output $ / M tokens$75$0.15
Results tracked4810

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Category by category

Coding Not comparable

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

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

Agentic & Tool Use Claude Opus 4.1 leads

Claude Opus 4.1: 35.0 (#41), Mistral Nemo: 23.5 (#125)

BenchmarkClaude Opus 4.1Mistral Nemo
Terminal-Bench38%—
Berkeley Function Calling Leaderboard—27.6%
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
BALROG—17.6%
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), Mistral Nemo: 20.7 (#232)

BenchmarkClaude Opus 4.1Mistral Nemo
DTBench80%48.6%
Epoch Capabilities Index144.12118.68
SimpleBench60%—
Chess Puzzles7%—
EnigmaEval7.2%—
EBR-Bench7.9%—
LMArena Hard Prompts1443—
Mystery Game Puzzles21%—
LMCA37.1%—
ForecastBench62—
PIQA—83.5%

Math Mistral Nemo leads

Claude Opus 4.1: 22.3 (#277), Mistral Nemo: 25.5 (#268)

BenchmarkClaude Opus 4.1Mistral Nemo
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.9%—
LMArena Math1431—
MATH Level 5—10.8%
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—
GSM8K—84.2%

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), Mistral Nemo: 12.3 (#298)

BenchmarkClaude Opus 4.1Mistral Nemo
GPQA Diamond77.3%29.9%
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—
LMArena Expert1439—
BoolQ—82.5%

Multimodal Not comparable

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

BenchmarkClaude Opus 4.1Mistral Nemo
VPCT35%—

Multilingual Not comparable

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

BenchmarkClaude Opus 4.1Mistral Nemo
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 Nemo: —

BenchmarkClaude Opus 4.1Mistral Nemo
LMArena Instruction Following1435—

Long Context Not comparable

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

BenchmarkClaude Opus 4.1Mistral Nemo
LMArena Longer Query1455—

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.4 (#74), Mistral Nemo: 28.5 (#296)

BenchmarkClaude Opus 4.1Mistral Nemo
LMArena Text1419—
LMArena Creative Writing1412—
Short-Story Creative Writing84.7%—
EQ-Bench Creative Writing—881
LMArena Multi-Turn1444—

Frequently asked questions

Is Claude Opus 4.1 better than Mistral Nemo?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 26.4 on the Noometry Index. Mistral Nemo costs 200× 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 Nemo?

Mistral Nemo is cheaper. It lists at $0.15 per million input tokens and $0.15 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

Which has the bigger context window?

Claude Opus 4.1 does, with 200K tokens against 128K.

How many benchmarks do Claude Opus 4.1 and Mistral Nemo share?

3 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Mistral Nemo has 10.

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