# GPT-5.5 Pro vs MiMo-V2.6-Flash

> GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 44.4 on the Noometry Index. MiMo-V2.6-Flash costs 386× 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-mimo-v2-6-flash
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where GPT-5.5 Pro leads 83.8 to 37.4.
- MiMo-V2.6-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
- GPT-5.5 Pro accepts more context: 1.05M tokens versus 1.05M.
- MiMo-V2.6-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 64.3 | 44.4 |
| Rank | 7 | 74 |
| Context | 1.05M | 1.05M |
| Input $/M | $30 | $0.14 |
| Output $/M | $180 | $0.28 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.5 Pro: —
- MiMo-V2.6-Flash: 44.3 (#68)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Coding | — | 1516 |

## Reasoning

- GPT-5.5 Pro: 73.6 (#7)
- MiMo-V2.6-Flash: 29.6 (#82)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| LMArena Hard Prompts | — | 1481 |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| Epoch Capabilities Index | 162.45 | — |

## Math

- GPT-5.5 Pro: 83.8 (#8)
- MiMo-V2.6-Flash: 37.4 (#97)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| LMArena Math | — | 1477 |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |

## Knowledge

- GPT-5.5 Pro: 64.2 (#17)
- MiMo-V2.6-Flash: 42.0 (#91)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| GPQA Diamond | 93.9% | — |
| LMArena Expert | — | 1516 |

## Multimodal

- GPT-5.5 Pro: —
- MiMo-V2.6-Flash: 40.2 (#39)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Vision | — | 1266 |

## Multilingual

- GPT-5.5 Pro: —
- MiMo-V2.6-Flash: 54.6 (#41)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Non-English | — | 1439 |
| LMArena Chinese | — | 1501 |
| LMArena Russian | — | 1424 |

## Instruction Following

- GPT-5.5 Pro: —
- MiMo-V2.6-Flash: 77.0 (#33)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1463 |

## Long Context

- GPT-5.5 Pro: —
- MiMo-V2.6-Flash: 44.8 (#52)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Longer Query | — | 1465 |

## Writing & Preference

- GPT-5.5 Pro: —
- MiMo-V2.6-Flash: 63.9 (#61)

| Benchmark | GPT-5.5 Pro | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Text | — | 1459 |
| LMArena Creative Writing | — | 1408 |
| LMArena Multi-Turn | — | 1460 |

## FAQ

### Is GPT-5.5 Pro better than MiMo-V2.6-Flash?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 44.4 on the Noometry Index. MiMo-V2.6-Flash costs 386× 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 MiMo-V2.6-Flash?

MiMo-V2.6-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 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 1.05M.

### How many benchmarks do GPT-5.5 Pro and MiMo-V2.6-Flash share?

0 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and MiMo-V2.6-Flash has 13.