# GPT-5.2 Codex vs MiMo-V2.6-Flash

> MiMo-V2.6-Flash is the stronger model overall, scoring 44.4 to 42.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-2-codex-vs-mimo-v2-6-flash
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- MiMo-V2.6-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $1.75 / $14 for GPT-5.2 Codex.
- MiMo-V2.6-Flash accepts more context: 1.05M tokens versus 400K.
- MiMo-V2.6-Flash has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 42.2 | 44.4 |
| Rank | 107 | 74 |
| Context | 400K | 1.05M |
| Input $/M | $1.75 | $0.14 |
| Output $/M | $14 | $0.28 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.2 Codex: 45.4 (#66)
- MiMo-V2.6-Flash: 44.3 (#68)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| SWE-bench Verified (bash only) | 72.8% | — |
| LMArena WebDev | 1339 | — |
| SWE-bench Multilingual | 66.3% | — |
| LMArena Coding | — | 1516 |
| ALE-Bench | 1,300 | — |

## Agentic & Tool Use

- GPT-5.2 Codex: 40.7 (#20)
- MiMo-V2.6-Flash: —

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| Terminal-Bench | 66.5% | — |

## Reasoning

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 29.6 (#82)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Hard Prompts | — | 1481 |

## Math

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 37.4 (#97)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Math | — | 1477 |

## Knowledge

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 42.0 (#91)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Expert | — | 1516 |

## Multimodal

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 40.2 (#39)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Vision | — | 1266 |

## Multilingual

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 54.6 (#41)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Non-English | — | 1439 |
| LMArena Chinese | — | 1501 |
| LMArena Russian | — | 1424 |

## Instruction Following

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 77.0 (#33)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1463 |

## Long Context

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 44.8 (#52)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Longer Query | — | 1465 |

## Writing & Preference

- GPT-5.2 Codex: —
- MiMo-V2.6-Flash: 63.9 (#61)

| Benchmark | GPT-5.2 Codex | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Text | — | 1459 |
| LMArena Creative Writing | — | 1408 |
| LMArena Multi-Turn | — | 1460 |

## FAQ

### Is GPT-5.2 Codex better than MiMo-V2.6-Flash?

MiMo-V2.6-Flash is the stronger model overall, scoring 44.4 to 42.2 on the Noometry Index.

### Which is cheaper, GPT-5.2 Codex 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-5.2 Codex lists at $1.75 and $14.

### Is GPT-5.2 Codex or MiMo-V2.6-Flash better for coding?

GPT-5.2 Codex scores higher on coding benchmarks: 45.4 versus 44.3 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2.6-Flash does, with 1.05M tokens against 400K.

### How many benchmarks do GPT-5.2 Codex and MiMo-V2.6-Flash share?

0 benchmarks have published results for both models. GPT-5.2 Codex has 5 scored results on Noometry and MiMo-V2.6-Flash has 13.