Model comparison
Claude Sonnet 4.5 vs Ministral 3B
Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 25.6 on the Noometry Index. Ministral 3B costs 150× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.
Last verified . 6 shared benchmarks.
Mistral AISummary
- They share 6 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 3 categories and Ministral 3B in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude Sonnet 4.5 leads 48.4 to 10.4.
- The biggest single-benchmark swing is MATH Level 5: 97.7% for Claude Sonnet 4.5 and 14.4% for Ministral 3B.
- Ministral 3B is cheaper at $0.04 / $0.04 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
- Claude Sonnet 4.5 accepts more context: 1M tokens versus 128K.
- Ministral 3B has downloadable open weights; the other is API-only.
Side by side
| Claude Sonnet 4.5 | Ministral 3B | |
|---|---|---|
| Provider | Anthropic | Mistral AI |
| Noometry Index | 44.0 | 25.6 |
| Released | 2025-09-29 | 2024-10-01 |
| Weights | Proprietary | Open |
| Context window | 1M | 128K |
| Max output | 64K | 128K |
| Input $ / M tokens | $3 | $0.04 |
| Output $ / M tokens | $15 | $0.04 |
| Results tracked | 73 | 6 |
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Category by category
Coding Not comparable
Claude Sonnet 4.5: 47.8 (#54), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| 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% | — |
| LMArena Coding | 1489 | — |
| ALE-Bench | 796.15 | — |
| AlgoTune | 1.52 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 4.5: 38.1 (#30), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| 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 (#113), Ministral 3B: 17.7 (#278)
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| DTBench | 83.2% | 51.7% |
| LMCA | 38.8% | 5.5% |
| Epoch Capabilities Index | 146.84 | 118.08 |
| 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% | — |
| LMArena Hard Prompts | 1462 | — |
| Mystery Game Puzzles | 17% | — |
| ForecastBench | 61.9 | — |
Math Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 31.9 (#190), Ministral 3B: 24.5 (#257)
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| MATH Level 5 | 97.7% | 14.4% |
| FrontierMath (Tiers 1-3) | 23.9% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 77.8% | — |
| ProofBench | 19% | — |
| Omni-MATH | 55.3% | — |
| LMArena Math | 1448 | — |
| FrontierMath (Feb 2025 set) | 15.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 48.4 (#70), Ministral 3B: 10.4 (#297)
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| GPQA Diamond | 82.3% | 25.3% |
| Vectara Hallucination Rate | 12% | 7.3% |
| Humanity's Last Exam | 13.7% | — |
| SimpleQA Verified | 30.7% | — |
| MMLU-Pro | 86.9% | — |
| GPQA (HELM) | 68.6% | — |
| LMArena Expert | 1483 | — |
Multimodal Not comparable
Claude Sonnet 4.5: 34.1 (#84), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| VPCT | 39.8% | — |
| LMArena Document | 1450 | — |
Multilingual Not comparable
Claude Sonnet 4.5: 53.6 (#65), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| LMArena Non-English | 1425 | — |
| LMArena Chinese | 1459 | — |
| LMArena French | 1459 | — |
| LMArena German | 1427 | — |
| LMArena Japanese | 1390 | — |
| LMArena Korean | 1403 | — |
| LMArena Russian | 1436 | — |
| LMArena Spanish | 1457 | — |
Instruction Following Not comparable
Claude Sonnet 4.5: 75.2 (#74), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| IFEval | 85% | — |
| LMArena Instruction Following | 1459 | — |
Long Context Not comparable
Claude Sonnet 4.5: 45.2 (#45), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| LMArena Longer Query | 1476 | — |
Writing & Preference Not comparable
Claude Sonnet 4.5: 66.7 (#33), Ministral 3B: —
| Benchmark | Claude Sonnet 4.5 | Ministral 3B |
|---|---|---|
| LMArena Text | 1439 | — |
| LMArena Creative Writing | 1442 | — |
| EQ-Bench Creative Writing | 1678 | — |
| WildBench | 85.4% | — |
| LMArena Multi-Turn | 1465 | — |
Frequently asked questions
Is Claude Sonnet 4.5 better than Ministral 3B?
Claude Sonnet 4.5 is the stronger model overall, scoring 44.0 to 25.6 on the Noometry Index. Ministral 3B costs 150× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.
Which is cheaper, Claude Sonnet 4.5 or Ministral 3B?
Ministral 3B is cheaper. It lists at $0.04 per million input tokens and $0.04 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.
Which has the bigger context window?
Claude Sonnet 4.5 does, with 1M tokens against 128K.
How many benchmarks do Claude Sonnet 4.5 and Ministral 3B share?
6 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Ministral 3B has 6.