Model comparison
Claude Opus 5 vs Mistral 7B
Claude Opus 5 is the stronger model overall, scoring 67.8 to 23.0 on the Noometry Index. Mistral 7B costs 40× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.
Last verified . 21 shared benchmarks.
Mistral AISummary
- They share 21 benchmarks with published results for both. Claude Opus 5 scores higher in 8 categories and Mistral 7B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Opus 5 leads 86.2 to 8.1.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.9% for Claude Opus 5 and 0.3% for Mistral 7B.
- Mistral 7B is cheaper at $0.25 / $0.25 per million input/output tokens, against $5 / $25 for Claude Opus 5.
- Claude Opus 5 accepts more context: 1M tokens versus 8K.
- Mistral 7B has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 5 | Mistral 7B | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 67.8 | 23.0 |
| Released | 2026-07-24 | 2023-09-27 |
| Weights | Proprietary | Open |
| Context window | 1M | 8K |
| Max output | 128K | 8K |
| Input $ / M tokens | $5 | $0.25 |
| Output $ / M tokens | $25 | $0.25 |
| Results tracked | 57 | 37 |
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Category by category
Coding Claude Opus 5 leads
Claude Opus 5: 67.5 (#5), Mistral 7B: 26.4 (#326)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| LMArena Coding | 1534 | 1082 |
| DeepSWE | 73.6% | — |
| FrontierCode | 53.4% | — |
| CursorBench | 46.6% | — |
| LMArena WebDev | 1691 | — |
| FrontierSWE | 52% | — |
| SciCode | 56.4% | — |
| WeirdML | 91.8% | — |
| BigCodeBench Instruct | — | 19.5% |
| BigCodeBench Complete | — | 27.3% |
| ALE-Bench | 2,165 | — |
| HumanEval+ | — | 36% |
| MBPP+ | — | 42.1% |
Agentic & Tool Use Not comparable
Claude Opus 5: 55.6 (#1), Mistral 7B: —
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| APEX-Agents | 65.8% | — |
| OSWorld 2.0 | 31.4% | — |
| τ²-bench Banking | 48.7% | — |
| PostTrainBench | 35% | — |
| BALROG | 63.4% | — |
| GBAEval | 79.6% | — |
| GDP.pdf | 24% | — |
| Vending-Bench 2 | 11,182 | — |
Reasoning Claude Opus 5 leads
Claude Opus 5: 77.2 (#4), Mistral 7B: 13.1 (#336)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| Chess Puzzles | 42% | 0% |
| LMArena Hard Prompts | 1526 | 1067 |
| DTBench | 97.9% | 42.5% |
| Epoch Capabilities Index | 162.78 | 112.21 |
| ARC-AGI-2 | 90.4% | — |
| SimpleBench | 80.6% | — |
| NYT Connections (extended) | 94.3% | — |
| ARC-AGI-1 | 97.5% | — |
| CritPt | 29.1% | — |
| EBR-Bench | 45.7% | — |
| Mystery Game Puzzles | 59% | — |
| LMCA | 64.5% | — |
| Adversarial NLI | — | 47.1% |
| Bench to the Future 3 | 0.12 | — |
| BIG-Bench Hard | — | 56.1% |
| HellaSwag | — | 81% |
| PIQA | — | 83% |
| WinoGrande | — | 75.3% |
Math Claude Opus 5 leads
Claude Opus 5: 86.2 (#8), Mistral 7B: 8.1 (#325)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 98.9% | 0.3% |
| LMArena Math | 1531 | 1085 |
| FrontierMath (Tiers 1-3) | 85.6% | — |
| FrontierMath Tier 4 | 73.2% | — |
| ProofBench | 99% | — |
| MATH Level 5 | — | 3.7% |
| GSM8K | — | 54.4% |
Knowledge Claude Opus 5 leads
Claude Opus 5: 66.8 (#9), Mistral 7B: 7.4 (#311)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| GPQA Diamond | 93.9% | 15.2% |
| LMArena Expert | 1557 | 1036 |
| SimpleQA Verified | 59.9% | — |
| ARC (AI2) Challenge | — | 78.6% |
| BoolQ | — | 87.4% |
| MMLU | — | 62.5% |
| OpenBookQA | — | 79.8% |
| TriviaQA | — | 75.2% |
Multimodal Not comparable
Claude Opus 5: 50.8 (#8), Mistral 7B: —
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| LMArena Vision | 1319 | — |
| Blueprint-Bench 2 | 30.4% | — |
| Furniture Assembly | 60.8% | — |
| LMArena Document | 1516 | — |
Multilingual Claude Opus 5 leads
Claude Opus 5: 58.8 (#4), Mistral 7B: 25.8 (#283)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| LMArena Non-English | 1501 | 1012 |
| LMArena Chinese | 1574 | 1009 |
| LMArena French | 1519 | 1037 |
| LMArena German | 1524 | 987 |
| LMArena Japanese | 1516 | 878 |
| LMArena Russian | 1507 | 1018 |
| LMArena Spanish | 1519 | 1026 |
| LMArena Korean | 1521 | — |
Instruction Following Claude Opus 5 leads
Claude Opus 5: 79.2 (#7), Mistral 7B: 54.2 (#280)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| LMArena Instruction Following | 1517 | 1060 |
Long Context Claude Opus 5 leads
Claude Opus 5: 46.5 (#21), Mistral 7B: 32.2 (#271)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| LMArena Longer Query | 1515 | 1060 |
Writing & Preference Claude Opus 5 leads
Claude Opus 5: 79.2 (#1), Mistral 7B: 30.7 (#286)
| Benchmark | Claude Opus 5 | Mistral 7B |
|---|---|---|
| LMArena Text | 1507 | 1090 |
| LMArena Creative Writing | 1491 | 1068 |
| LMArena Multi-Turn | 1499 | 1062 |
| EQ-Bench Creative Writing | 2133 | — |
| EQ-Bench 4 | 1385 | — |
Frequently asked questions
Is Claude Opus 5 better than Mistral 7B?
Claude Opus 5 is the stronger model overall, scoring 67.8 to 23.0 on the Noometry Index. Mistral 7B costs 40× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.
Which is cheaper, Claude Opus 5 or Mistral 7B?
Mistral 7B is cheaper. It lists at $0.25 per million input tokens and $0.25 per million output tokens; Claude Opus 5 lists at $5 and $25.
Is Claude Opus 5 or Mistral 7B better for coding?
Claude Opus 5 scores higher on coding benchmarks: 67.5 versus 26.4 in the Noometry coding category.
Which has the bigger context window?
Claude Opus 5 does, with 1M tokens against 8K.
How many benchmarks do Claude Opus 5 and Mistral 7B share?
21 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Mistral 7B has 37.