Model comparison
Claude Sonnet 5 vs Mistral Medium
Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 36.3 on the Noometry Index.
Last verified . 29 shared benchmarks.
Mistral AISummary
- They share 29 benchmarks with published results for both. Claude Sonnet 5 scores higher in 10 categories and Mistral Medium in 0 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5 leads 66.2 to 28.1.
- The biggest single-benchmark swing is ProofBench: 77% for Claude Sonnet 5 and 9% for Mistral Medium.
- Mistral Medium is cheaper at $1.50 / $7.50 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.
- Claude Sonnet 5 accepts more context: 1M tokens versus 262K.
- Mistral Medium has downloadable open weights; the other is API-only.
Side by side
| Claude Sonnet 5 | Mistral Medium | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 54.6 | 36.3 |
| Released | 2026-06-29 | 2023-12-11 |
| Weights | Proprietary | Open |
| Context window | 1M | 262K |
| Max output | 128K | 262K |
| Input $ / M tokens | $2 | $1.50 |
| Output $ / M tokens | $10 | $7.50 |
| Results tracked | 51 | 36 |
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Category by category
Coding Claude Sonnet 5 leads
Claude Sonnet 5: 55.5 (#26), Mistral Medium: 34.2 (#243)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| FrontierCode | 42.7% | 8% |
| SciCode | 54.3% | 40.2% |
| WeirdML | 68.8% | 43.7% |
| LMArena Coding | 1483 | 1434 |
| ALE-Bench | 1,463 | 763.98 |
| DeepSWE | 53.8% | — |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1541 | — |
| GSO | 37.3% | — |
Agentic & Tool Use Claude Sonnet 5 leads
Claude Sonnet 5: 42.8 (#18), Mistral Medium: 28.3 (#90)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| APEX-Agents | 54.5% | — |
| Berkeley Function Calling Leaderboard | — | 37.7% |
| GBAEval | 65.3% | — |
| LMArena Search | 1194 | — |
| Vending-Bench 2 | 6,378 | — |
Reasoning Claude Sonnet 5 leads
Claude Sonnet 5: 49.1 (#39), Mistral Medium: 24.0 (#167)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| CritPt | 16.9% | 0% |
| LMArena Hard Prompts | 1461 | 1426 |
| DTBench | 92.5% | 75.5% |
| LMCA | 50% | 26.1% |
| Surface Evolver Bench | 60% | 26.9% |
| SimpleBench | 60.6% | — |
| Kagi LLM Benchmark | — | 50% |
| NYT Connections (extended) | 75.1% | — |
| Chess Puzzles | 35% | — |
| Mystery Game Puzzles | 35% | — |
| Bench to the Future 3 | 0.14 | — |
| Epoch Capabilities Index | 156.21 | — |
| ForecastBench | 61.1 | — |
Math Claude Sonnet 5 leads
Claude Sonnet 5: 66.2 (#27), Mistral Medium: 28.1 (#245)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 94.7% | 32.2% |
| ProofBench | 77% | 9% |
| LMArena Math | 1467 | 1408 |
| FrontierMath (Tiers 1-3) | 65.6% | — |
| FrontierMath Tier 4 | 29.3% | — |
| MATH Level 5 | — | 81.6% |
| FrontierMath (Feb 2025 set) | — | 0.3% |
Knowledge Claude Sonnet 5 leads
Claude Sonnet 5: 55.6 (#47), Mistral Medium: 25.0 (#265)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| GPQA Diamond | 90.5% | 59.5% |
| LMArena Expert | 1490 | 1408 |
| Humanity's Last Exam | — | 4.5% |
| SimpleQA Verified | 33.7% | — |
| Vectara Hallucination Rate | — | 22.7% |
Multimodal Claude Sonnet 5 leads
Claude Sonnet 5: 42.4 (#31), Mistral Medium: 35.3 (#88)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| LMArena Vision | 1274 | 1172 |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |
Multilingual Claude Sonnet 5 leads
Claude Sonnet 5: 53.8 (#55), Mistral Medium: 52.1 (#91)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| LMArena Non-English | 1431 | 1408 |
| LMArena Chinese | 1477 | 1447 |
| LMArena French | 1460 | 1459 |
| LMArena German | 1440 | 1432 |
| LMArena Japanese | 1422 | 1378 |
| LMArena Korean | 1411 | 1380 |
| LMArena Russian | 1451 | 1411 |
| LMArena Spanish | 1437 | 1433 |
Instruction Following Claude Sonnet 5 leads
Claude Sonnet 5: 76.3 (#41), Mistral Medium: 73.7 (#116)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| LMArena Instruction Following | 1452 | 1398 |
Long Context Claude Sonnet 5 leads
Claude Sonnet 5: 44.8 (#55), Mistral Medium: 42.9 (#114)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| LMArena Longer Query | 1463 | 1406 |
Writing & Preference Claude Sonnet 5 leads
Claude Sonnet 5: 69.2 (#25), Mistral Medium: 60.0 (#103)
| Benchmark | Claude Sonnet 5 | Mistral Medium |
|---|---|---|
| LMArena Text | 1442 | 1424 |
| LMArena Creative Writing | 1416 | 1391 |
| LMArena Multi-Turn | 1454 | 1418 |
| Short-Story Creative Writing | — | 77.3% |
| EQ-Bench Creative Writing | 1794 | — |
| EQ-Bench 4 | 1236 | — |
Frequently asked questions
Is Claude Sonnet 5 better than Mistral Medium?
Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 36.3 on the Noometry Index.
Which is cheaper, Claude Sonnet 5 or Mistral Medium?
Mistral Medium is cheaper. It lists at $1.50 per million input tokens and $7.50 per million output tokens; Claude Sonnet 5 lists at $2 and $10.
Is Claude Sonnet 5 or Mistral Medium better for coding?
Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 34.2 in the Noometry coding category.
Which has the bigger context window?
Claude Sonnet 5 does, with 1M tokens against 262K.
How many benchmarks do Claude Sonnet 5 and Mistral Medium share?
29 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Mistral Medium has 36.