# Magistral Medium vs o3-mini

> o3-mini is the stronger model overall, scoring 36.7 to 34.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/magistral-medium-vs-o3-mini
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. Magistral Medium scores higher in 2 categories and o3-mini in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in instruction following, where o3-mini leads 75.3 to 66.2.
- The biggest single-benchmark swing is ARC-AGI-1: 6.1% for Magistral Medium and 34.5% for o3-mini.
- o3-mini is cheaper at $1.10 / $4.40 per million input/output tokens, against $2 / $5 for Magistral Medium.
- o3-mini accepts more context: 200K tokens versus 128K.
- Magistral Medium has downloadable open weights; the other is API-only.

## Snapshot

| | Magistral Medium | o3-mini |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Noometry Index | 34.8 | 36.7 |
| Rank | 224 | 205 |
| Context | 128K | 200K |
| Input $/M | $2 | $1.10 |
| Output $/M | $5 | $4.40 |
| Weights | Open | Proprietary |

## Coding

- Magistral Medium: 38.6 (#161)
- o3-mini: 41.4 (#116)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| SciCode | 39.2% | 39.8% |
| LMArena Coding | 1319 | 1378 |
| Aider Polyglot | — | 60.4% |
| GSO | — | 1.3% |
| WeirdML | — | 43.7% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |

## Agentic & Tool Use

- Magistral Medium: —
- o3-mini: 29.3 (#79)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| Cybench | — | 22.5% |

## Reasoning

- Magistral Medium: 8.7 (#342)
- o3-mini: 16.3 (#295)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| ARC-AGI-2 | 0% | 3% |
| ARC-AGI-1 | 6.1% | 34.5% |
| CritPt | 0.3% | 0.3% |
| LMArena Hard Prompts | 1267 | 1366 |
| SimpleBench | — | 22.8% |
| Kagi LLM Benchmark | 16.2% | — |
| Chess Puzzles | — | 17% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| DTBench | — | 68.8% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| Epoch Capabilities Index | — | 140.35 |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |

## Math

- Magistral Medium: 32.4 (#187)
- o3-mini: 27.6 (#236)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| LMArena Math | 1249 | 1396 |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| OTIS Mock AIME 2024-2025 | — | 76.9% |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |

## Knowledge

- Magistral Medium: 32.9 (#199)
- o3-mini: 38.3 (#135)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| LMArena Expert | 1222 | 1364 |
| GPQA Diamond | — | 77% |
| SimpleQA Verified | — | 15.3% |
| Confabulations | — | 17.9% |

## Multilingual

- Magistral Medium: 39.8 (#219)
- o3-mini: 45.9 (#159)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| LMArena Non-English | 1232 | 1319 |
| LMArena Chinese | 1225 | 1379 |
| LMArena French | 1268 | 1333 |
| LMArena German | 1248 | 1303 |
| LMArena Japanese | 1176 | 1286 |
| LMArena Korean | 1125 | 1314 |
| LMArena Russian | 1224 | 1304 |
| LMArena Spanish | 1269 | 1321 |

## Instruction Following

- Magistral Medium: 66.2 (#207)
- o3-mini: 75.3 (#67)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1254 | 1338 |
| LiveBench Instruction Following | — | 84.4% |

## Long Context

- Magistral Medium: 39.3 (#178)
- o3-mini: 33.8 (#251)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| LMArena Longer Query | 1295 | 1343 |
| Fiction.LiveBench | — | 50% |

## Writing & Preference

- Magistral Medium: 46.5 (#214)
- o3-mini: 50.4 (#177)

| Benchmark | Magistral Medium | o3-mini |
|---|---|---|
| LMArena Text | 1255 | 1337 |
| LMArena Creative Writing | 1245 | 1286 |
| LMArena Multi-Turn | 1275 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| LiveBench Language | — | 50.7% |

## FAQ

### Is Magistral Medium better than o3-mini?

o3-mini is the stronger model overall, scoring 36.7 to 34.8 on the Noometry Index.

### Which is cheaper, Magistral Medium or o3-mini?

o3-mini is cheaper. It lists at $1.10 per million input tokens and $4.40 per million output tokens; Magistral Medium lists at $2 and $5.

### Is Magistral Medium or o3-mini better for coding?

o3-mini scores higher on coding benchmarks: 41.4 versus 38.6 in the Noometry coding category.

### Which has the bigger context window?

o3-mini does, with 200K tokens against 128K.

### How many benchmarks do Magistral Medium and o3-mini share?

21 benchmarks have published results for both models. Magistral Medium has 22 scored results on Noometry and o3-mini has 51.