# GPT-5.5 Pro vs MiniMax-M2.1

> GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 38.9 on the Noometry Index. MiniMax-M2.1 costs 129× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-5-pro-vs-minimax-m2-1
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5.5 Pro leads 73.3 to 16.6.
- MiniMax-M2.1 is cheaper at $0.30 / $1.20 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
- GPT-5.5 Pro accepts more context: 1.05M tokens versus 205K.
- MiniMax-M2.1 has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| Provider | OpenAI | MiniMax |
| Noometry Index | 64.3 | 38.9 |
| Rank | 8 | 178 |
| Context | 1.05M | 205K |
| Input $/M | $30 | $0.30 |
| Output $/M | $180 | $1.20 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.5 Pro: —
- MiniMax-M2.1: 40.4 (#143)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| LMArena WebDev | — | 1384 |
| LMArena Coding | — | 1421 |
| ALE-Bench | — | 623.83 |

## Agentic & Tool Use

- GPT-5.5 Pro: —
- MiniMax-M2.1: 27.9 (#98)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| Terminal-Bench | — | 36.6% |

## Reasoning

- GPT-5.5 Pro: 73.3 (#10)
- MiniMax-M2.1: 16.6 (#302)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| NYT Connections (extended) | — | 11.2% |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| LMArena Hard Prompts | — | 1411 |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| Epoch Capabilities Index | 162.07 | — |

## Math

- GPT-5.5 Pro: 84.0 (#10)
- MiniMax-M2.1: 38.3 (#138)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| LMArena Math | — | 1397 |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |

## Knowledge

- GPT-5.5 Pro: 64.1 (#19)
- MiniMax-M2.1: 38.3 (#147)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| GPQA Diamond | 93.9% | — |
| Vectara Hallucination Rate | — | 11.8% |
| LMArena Expert | — | 1431 |

## Multilingual

- GPT-5.5 Pro: —
- MiniMax-M2.1: 50.0 (#128)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| LMArena Non-English | — | 1378 |
| LMArena Chinese | — | 1430 |
| LMArena French | — | 1404 |
| LMArena German | — | 1381 |
| LMArena Japanese | — | 1287 |
| LMArena Korean | — | 1298 |
| LMArena Russian | — | 1387 |
| LMArena Spanish | — | 1397 |

## Instruction Following

- GPT-5.5 Pro: —
- MiniMax-M2.1: 73.8 (#112)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| LMArena Instruction Following | — | 1400 |

## Long Context

- GPT-5.5 Pro: —
- MiniMax-M2.1: 43.2 (#101)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| LMArena Longer Query | — | 1416 |

## Writing & Preference

- GPT-5.5 Pro: —
- MiniMax-M2.1: 58.3 (#120)

| Benchmark | GPT-5.5 Pro | MiniMax-M2.1 |
|---|---|---|
| LMArena Text | — | 1392 |
| LMArena Creative Writing | — | 1361 |
| LMArena Multi-Turn | — | 1396 |

## FAQ

### Is GPT-5.5 Pro better than MiniMax-M2.1?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 38.9 on the Noometry Index. MiniMax-M2.1 costs 129× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.

### Which is cheaper, GPT-5.5 Pro or MiniMax-M2.1?

MiniMax-M2.1 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; GPT-5.5 Pro lists at $30 and $180.

### Which has the bigger context window?

GPT-5.5 Pro does, with 1.05M tokens against 205K.

### How many benchmarks do GPT-5.5 Pro and MiniMax-M2.1 share?

0 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and MiniMax-M2.1 has 22.