# MiniMax-M2.1 vs o3-mini

> MiniMax-M2.1 is the stronger model overall, scoring 38.9 to 36.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/minimax-m2-1-vs-o3-mini
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. MiniMax-M2.1 scores higher in 5 categories and o3-mini in 4 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in math, where MiniMax-M2.1 leads 38.3 to 28.1.
- MiniMax-M2.1 is cheaper at $0.30 / $1.20 per million input/output tokens, against $1.10 / $4.40 for o3-mini.
- MiniMax-M2.1 accepts more context: 205K tokens versus 200K.
- MiniMax-M2.1 has downloadable open weights; the other is API-only.

## Snapshot

| | MiniMax-M2.1 | o3-mini |
|---|---|---|
| Provider | MiniMax | OpenAI |
| Noometry Index | 38.9 | 36.7 |
| Rank | 178 | 212 |
| Context | 205K | 200K |
| Input $/M | $0.30 | $1.10 |
| Output $/M | $1.20 | $4.40 |
| Weights | Open | Proprietary |

## Coding

- MiniMax-M2.1: 40.4 (#143)
- o3-mini: 40.8 (#132)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Coding | 1421 | 1378 |
| Aider Polyglot | — | 60.4% |
| LMArena WebDev | 1384 | — |
| SciCode | — | 39.8% |
| GSO | — | 1.3% |
| WeirdML | — | 43.7% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |
| ALE-Bench | 623.83 | — |

## Agentic & Tool Use

- MiniMax-M2.1: 27.9 (#98)
- o3-mini: 29.6 (#84)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| Terminal-Bench | 36.6% | — |
| Cybench | — | 22.5% |

## Reasoning

- MiniMax-M2.1: 16.6 (#302)
- o3-mini: 16.3 (#305)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Hard Prompts | 1411 | 1366 |
| ARC-AGI-2 | — | 3% |
| SimpleBench | — | 22.8% |
| NYT Connections (extended) | 11.2% | — |
| ARC-AGI-1 | — | 34.5% |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 17% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| DTBench | — | 68.8% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| Epoch Capabilities Index | — | 140.34 |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |

## Math

- MiniMax-M2.1: 38.3 (#138)
- o3-mini: 28.1 (#244)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Math | 1397 | 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

- MiniMax-M2.1: 38.3 (#147)
- o3-mini: 38.3 (#146)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Expert | 1431 | 1364 |
| GPQA Diamond | — | 77% |
| SimpleQA Verified | — | 15.3% |
| Confabulations | — | 17.9% |
| Vectara Hallucination Rate | 11.8% | — |

## Multilingual

- MiniMax-M2.1: 50.0 (#128)
- o3-mini: 45.7 (#164)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Non-English | 1378 | 1319 |
| LMArena Chinese | 1430 | 1379 |
| LMArena French | 1404 | 1334 |
| LMArena German | 1381 | 1303 |
| LMArena Japanese | 1287 | 1286 |
| LMArena Korean | 1298 | 1314 |
| LMArena Russian | 1387 | 1304 |
| LMArena Spanish | 1397 | 1321 |

## Instruction Following

- MiniMax-M2.1: 73.8 (#112)
- o3-mini: 75.1 (#72)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1400 | 1337 |
| LiveBench Instruction Following | — | 84.4% |

## Long Context

- MiniMax-M2.1: 43.2 (#101)
- o3-mini: 33.8 (#256)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Longer Query | 1416 | 1343 |
| Fiction.LiveBench | — | 50% |

## Writing & Preference

- MiniMax-M2.1: 58.3 (#120)
- o3-mini: 50.3 (#182)

| Benchmark | MiniMax-M2.1 | o3-mini |
|---|---|---|
| LMArena Text | 1392 | 1337 |
| LMArena Creative Writing | 1361 | 1286 |
| LMArena Multi-Turn | 1396 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| LiveBench Language | — | 50.7% |

## FAQ

### Is MiniMax-M2.1 better than o3-mini?

MiniMax-M2.1 is the stronger model overall, scoring 38.9 to 36.7 on the Noometry Index.

### Which is cheaper, MiniMax-M2.1 or o3-mini?

MiniMax-M2.1 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; o3-mini lists at $1.10 and $4.40.

### Is MiniMax-M2.1 or o3-mini better for coding?

They score almost the same on coding (40.4 vs 40.8); test both on your own repository before choosing.

### Which has the bigger context window?

MiniMax-M2.1 does, with 205K tokens against 200K.

### How many benchmarks do MiniMax-M2.1 and o3-mini share?

17 benchmarks have published results for both models. MiniMax-M2.1 has 22 scored results on Noometry and o3-mini has 51.