Model comparison
Claude Sonnet 4.5 vs Mistral
Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 29.9 on the Noometry Index.
Last verified . 22 shared benchmarks.
Mistral AISummary
- They share 22 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 8 categories and Mistral in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Sonnet 4.5 leads 48.4 to 16.6.
- The biggest single-benchmark swing is MMLU-Pro: 86.9% for Claude Sonnet 4.5 and 27.7% for Mistral.
Side by side
| Claude Sonnet 4.5 | Mistral | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 44.1 | 29.9 |
| Released | 2025-09-29 | — |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 64K | — |
| Input $ / M tokens | $3 | — |
| Output $ / M tokens | $15 | — |
| Results tracked | 73 | 22 |
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Category by category
Coding Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 47.3 (#61), Mistral: 33.8 (#250)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| LMArena Coding | 1489 | 1162 |
| SWE-bench Verified | 71.3% | — |
| SWE-bench Verified (bash only) | 71.4% | — |
| LMArena WebDev | 1393 | — |
| SWE-bench Multilingual | 67% | — |
| SciCode | 44.7% | — |
| GSO | 14.7% | — |
| WeirdML | 47.7% | — |
| ALE-Bench | 796.15 | — |
| AlgoTune | 1.52 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 4.5: 38.3 (#32), Mistral: —
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| Terminal-Bench | 46.5% | — |
| Berkeley Function Calling Leaderboard | 73.2% | — |
| GDPval | 42.5% | — |
| Remote Labor Index | 2.1% | — |
| τ²-bench Airline | 72% | — |
| τ²-bench Banking | 25.3% | — |
| τ²-bench Retail | 72.4% | — |
| τ²-bench Telecom | 84.9% | — |
| Cybench | 60% | — |
| DeepResearch Bench | 52.6% | — |
| OSWorld | 62.9% | — |
| LMArena Search | 1159 | — |
| METR Time Horizons | 67.4% | — |
| Vending-Bench 2 | 3,839 | — |
Reasoning Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 26.9 (#125), Mistral: 22.2 (#200)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| LMArena Hard Prompts | 1462 | 1149 |
| ARC-AGI-2 | 13.6% | — |
| SimpleBench | 54.3% | — |
| Kagi LLM Benchmark | 57.9% | — |
| NYT Connections (extended) | 37.3% | — |
| ARC-AGI-1 | 63.7% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 6% | — |
| EBR-Bench | 2.4% | — |
| Mystery Game Puzzles | 17% | — |
| DTBench | 83.2% | — |
| LMCA | 38.8% | — |
| Epoch Capabilities Index | 146.84 | — |
| ForecastBench | 61.9 | — |
Math Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 32.3 (#216), Mistral: 22.3 (#278)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| Omni-MATH | 55.3% | 7.2% |
| LMArena Math | 1449 | 1180 |
| FrontierMath (Tiers 1-3) | 23.9% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 77.8% | — |
| ProofBench | 19% | — |
| MATH Level 5 | 97.7% | — |
| FrontierMath (Feb 2025 set) | 15.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 48.4 (#76), Mistral: 16.6 (#288)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| MMLU-Pro | 86.9% | 27.7% |
| GPQA (HELM) | 68.6% | 30.3% |
| LMArena Expert | 1482 | 1125 |
| GPQA Diamond | 82.3% | — |
| Humanity's Last Exam | 13.7% | — |
| SimpleQA Verified | 30.7% | — |
| Vectara Hallucination Rate | 12% | — |
Multimodal Not comparable
Claude Sonnet 4.5: 34.8 (#89), Mistral: —
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| VPCT | 39.8% | — |
| LMArena Document | 1450 | — |
Multilingual Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 53.4 (#69), Mistral: 32.8 (#254)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| LMArena Non-English | 1425 | 1129 |
| LMArena Chinese | 1459 | 1109 |
| LMArena French | 1458 | 1180 |
| LMArena German | 1427 | 1155 |
| LMArena Japanese | 1390 | 1013 |
| LMArena Korean | 1403 | 1032 |
| LMArena Russian | 1437 | 1168 |
| LMArena Spanish | 1457 | 1143 |
Instruction Following Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 75.0 (#78), Mistral: 52.6 (#288)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| IFEval | 85% | 56.8% |
| LMArena Instruction Following | 1459 | 1152 |
Long Context Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 45.2 (#46), Mistral: 35.0 (#245)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| LMArena Longer Query | 1476 | 1153 |
Writing & Preference Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 66.5 (#34), Mistral: 37.0 (#260)
| Benchmark | Claude Sonnet 4.5 | Mistral |
|---|---|---|
| LMArena Text | 1439 | 1165 |
| LMArena Creative Writing | 1442 | 1158 |
| WildBench | 85.4% | 66% |
| LMArena Multi-Turn | 1465 | 1147 |
| EQ-Bench Creative Writing | 1678 | — |
Frequently asked questions
Is Claude Sonnet 4.5 better than Mistral?
Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 29.9 on the Noometry Index.
Is Claude Sonnet 4.5 or Mistral better for coding?
Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 33.8 in the Noometry coding category.
How many benchmarks do Claude Sonnet 4.5 and Mistral share?
22 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Mistral has 22.