# Mistral vs o3

> o3 is the stronger model overall, scoring 47.4 to 29.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/mistral-vs-o3
- Last updated: 2026-10-10
- Shared benchmarks: 22

## Summary

- They share 22 benchmarks with published results for both. Mistral scores higher in 0 categories and o3 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3 leads 54.5 to 16.3.
- The biggest single-benchmark swing is Omni-MATH: 7.2% for Mistral and 71.4% for o3.

## Snapshot

| | Mistral | o3 |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Noometry Index | 29.4 | 47.4 |
| Rank | 297 | 53 |
| Context | — | 200K |
| Input $/M | — | $2 |
| Output $/M | — | $8 |
| Weights | Proprietary | Proprietary |

## Coding

- Mistral: 33.2 (#249)
- o3: 47.3 (#57)

| Benchmark | Mistral | o3 |
|---|---|---|
| LMArena Coding | 1162 | 1408 |
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |

## Agentic & Tool Use

- Mistral: —
- o3: 34.3 (#42)

| Benchmark | Mistral | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |

## Reasoning

- Mistral: 21.3 (#199)
- o3: 32.1 (#66)

| Benchmark | Mistral | o3 |
|---|---|---|
| LMArena Hard Prompts | 1149 | 1402 |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 60.8% |
| CritPt | — | 1.4% |
| Chess Puzzles | — | 38% |
| EnigmaEval | — | 13.1% |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| Epoch Capabilities Index | — | 146.88 |
| ForecastBench | — | 62.5 |

## Math

- Mistral: 20.5 (#275)
- o3: 48.9 (#49)

| Benchmark | Mistral | o3 |
|---|---|---|
| Omni-MATH | 7.2% | 71.4% |
| LMArena Math | 1180 | 1426 |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 18.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Mistral: 16.3 (#283)
- o3: 54.5 (#47)

| Benchmark | Mistral | o3 |
|---|---|---|
| MMLU-Pro | 27.7% | 85.9% |
| GPQA (HELM) | 30.3% | 75.3% |
| LMArena Expert | 1125 | 1403 |
| GPQA Diamond | — | 81.8% |
| Humanity's Last Exam | — | 20.3% |
| SimpleQA Verified | — | 49.4% |
| Confabulations | — | 14.4% |

## Multimodal

- Mistral: —
- o3: 40.7 (#35)

| Benchmark | Mistral | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |

## Multilingual

- Mistral: 33.0 (#249)
- o3: 51.9 (#99)

| Benchmark | Mistral | o3 |
|---|---|---|
| LMArena Non-English | 1129 | 1402 |
| LMArena Chinese | 1109 | 1438 |
| LMArena French | 1179 | 1430 |
| LMArena German | 1155 | 1420 |
| LMArena Japanese | 1012 | 1404 |
| LMArena Korean | 1032 | 1371 |
| LMArena Russian | 1168 | 1407 |
| LMArena Spanish | 1143 | 1395 |

## Instruction Following

- Mistral: 52.9 (#283)
- o3: 73.0 (#122)

| Benchmark | Mistral | o3 |
|---|---|---|
| IFEval | 56.8% | 86.9% |
| LMArena Instruction Following | 1152 | 1368 |

## Long Context

- Mistral: 35.0 (#240)
- o3: 53.2 (#6)

| Benchmark | Mistral | o3 |
|---|---|---|
| LMArena Longer Query | 1154 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |

## Writing & Preference

- Mistral: 37.2 (#255)
- o3: 63.7 (#62)

| Benchmark | Mistral | o3 |
|---|---|---|
| LMArena Text | 1165 | 1410 |
| LMArena Creative Writing | 1158 | 1359 |
| WildBench | 66% | 86.1% |
| LMArena Multi-Turn | 1147 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |

## FAQ

### Is Mistral better than o3?

o3 is the stronger model overall, scoring 47.4 to 29.4 on the Noometry Index.

### Is Mistral or o3 better for coding?

o3 scores higher on coding benchmarks: 47.3 versus 33.2 in the Noometry coding category.

### How many benchmarks do Mistral and o3 share?

22 benchmarks have published results for both models. Mistral has 22 scored results on Noometry and o3 has 63.