Model comparison
Claude Opus 4.1 vs Mistral Medium
Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 36.3 on the Noometry Index. Mistral Medium costs 10× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.
Last verified . 27 shared benchmarks.
Mistral AISummary
- They share 27 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Mistral Medium in 3 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Opus 4.1 leads 42.0 to 25.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.9% for Claude Opus 4.1 and 32.2% for Mistral Medium.
- Mistral Medium is cheaper at $1.50 / $7.50 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
- Mistral Medium accepts more context: 262K tokens versus 200K.
- Mistral Medium has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 4.1 | Mistral Medium | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 41.0 | 36.3 |
| Released | 2025-08-05 | 2023-12-11 |
| Weights | Proprietary | Open |
| Context window | 200K | 262K |
| Max output | 32K | 262K |
| Input $ / M tokens | $15 | $1.50 |
| Output $ / M tokens | $75 | $7.50 |
| Results tracked | 48 | 36 |
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Category by category
Coding Claude Opus 4.1 leads
Claude Opus 4.1: 44.4 (#73), Mistral Medium: 34.2 (#243)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| WeirdML | 45.9% | 43.7% |
| LMArena Coding | 1479 | 1434 |
| ALE-Bench | 674.77 | 763.98 |
| SWE-bench Verified | 73.3% | — |
| FrontierCode | — | 8% |
| LMArena WebDev | 1390 | — |
| SciCode | — | 40.2% |
| AlgoTune | 1.34 | — |
Agentic & Tool Use Claude Opus 4.1 leads
Claude Opus 4.1: 35.0 (#41), Mistral Medium: 28.3 (#90)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| Terminal-Bench | 38% | — |
| Berkeley Function Calling Leaderboard | — | 37.7% |
| GDPval | 43.6% | — |
| Cybench | 42% | — |
| DeepResearch Bench | 48.3% | — |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |
Reasoning Claude Opus 4.1 leads
Claude Opus 4.1: 32.2 (#76), Mistral Medium: 24.0 (#167)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1426 |
| DTBench | 80% | 75.5% |
| LMCA | 37.1% | 26.1% |
| SimpleBench | 60% | — |
| Kagi LLM Benchmark | — | 50% |
| CritPt | — | 0% |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| Surface Evolver Bench | — | 26.9% |
| Epoch Capabilities Index | 144.12 | — |
| ForecastBench | 62 | — |
Math Mistral Medium leads
Claude Opus 4.1: 22.3 (#277), Mistral Medium: 28.1 (#245)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 32.2% |
| LMArena Math | 1431 | 1408 |
| FrontierMath (Feb 2025 set) | 7.2% | 0.3% |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| ProofBench | — | 9% |
| MATH Level 5 | — | 81.6% |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Claude Opus 4.1 leads
Claude Opus 4.1: 42.0 (#101), Mistral Medium: 25.0 (#265)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| GPQA Diamond | 77.3% | 59.5% |
| Humanity's Last Exam | 11.5% | 4.5% |
| Vectara Hallucination Rate | 11.8% | 22.7% |
| LMArena Expert | 1439 | 1408 |
| Confabulations | 17.1% | — |
Multimodal Mistral Medium leads
Claude Opus 4.1: 26.8 (#119), Mistral Medium: 35.3 (#88)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| LMArena Vision | — | 1172 |
| VPCT | 35% | — |
Multilingual Too close to call
Claude Opus 4.1: 52.0 (#95), Mistral Medium: 52.1 (#91)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| LMArena Non-English | 1405 | 1408 |
| LMArena Chinese | 1427 | 1447 |
| LMArena French | 1431 | 1459 |
| LMArena German | 1413 | 1432 |
| LMArena Japanese | 1378 | 1378 |
| LMArena Korean | 1380 | 1380 |
| LMArena Russian | 1422 | 1411 |
| LMArena Spanish | 1448 | 1433 |
Instruction Following Claude Opus 4.1 leads
Claude Opus 4.1: 75.6 (#58), Mistral Medium: 73.7 (#116)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| LMArena Instruction Following | 1435 | 1398 |
Long Context Claude Opus 4.1 leads
Claude Opus 4.1: 44.5 (#63), Mistral Medium: 42.9 (#114)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| LMArena Longer Query | 1455 | 1406 |
Writing & Preference Claude Opus 4.1 leads
Claude Opus 4.1: 62.4 (#74), Mistral Medium: 60.0 (#103)
| Benchmark | Claude Opus 4.1 | Mistral Medium |
|---|---|---|
| LMArena Text | 1419 | 1424 |
| LMArena Creative Writing | 1412 | 1391 |
| Short-Story Creative Writing | 84.7% | 77.3% |
| LMArena Multi-Turn | 1444 | 1418 |
Frequently asked questions
Is Claude Opus 4.1 better than Mistral Medium?
Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 36.3 on the Noometry Index. Mistral Medium costs 10× 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 Medium?
Mistral Medium is cheaper. It lists at $1.50 per million input tokens and $7.50 per million output tokens; Claude Opus 4.1 lists at $15 and $75.
Is Claude Opus 4.1 or Mistral Medium better for coding?
Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 34.2 in the Noometry coding category.
Which has the bigger context window?
Mistral Medium does, with 262K tokens against 200K.
How many benchmarks do Claude Opus 4.1 and Mistral Medium share?
27 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Mistral Medium has 36.