# GPT-5.4 nano vs MiMo-V2-Omni

> MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 41.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-4-nano-vs-mimo-v2-omni
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. GPT-5.4 nano scores higher in 3 categories and MiMo-V2-Omni in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2-Omni leads 29.7 to 23.7.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.20 / $1.25 for GPT-5.4 nano.
- GPT-5.4 nano accepts more context: 400K tokens versus 262K.

## Snapshot

| | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 41.9 | 43.6 |
| Rank | 125 | 88 |
| Context | 400K | 262K |
| Input $/M | $0.20 | $0.14 |
| Output $/M | $1.25 | $0.28 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.4 nano: 43.6 (#84)
- MiMo-V2-Omni: 43.3 (#89)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Coding | 1405 | 1466 |
| SciCode | 46.9% | — |
| WeirdML | 49.2% | — |
| ALE-Bench | 1,005 | — |

## Reasoning

- GPT-5.4 nano: 23.7 (#173)
- MiMo-V2-Omni: 29.7 (#88)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Hard Prompts | 1381 | 1445 |
| ARC-AGI-2 | 5.7% | — |
| Kagi LLM Benchmark | 39.7% | — |
| ARC-AGI-1 | 51.5% | — |
| CritPt | 9.3% | — |
| Chess Puzzles | 30% | — |
| Mystery Game Puzzles | 9% | — |
| DTBench | 80.3% | — |
| LMCA | 36.9% | — |
| Epoch Capabilities Index | 145.81 | — |
| ForecastBench | 57.3 | — |

## Math

- GPT-5.4 nano: 40.9 (#88)
- MiMo-V2-Omni: 39.1 (#115)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Math | 1406 | 1430 |
| FrontierMath (Tiers 1-3) | 44.9% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 87.8% | — |
| ProofBench | 5% | — |
| FrontierMath (Feb 2025 set) | 25.9% | — |
| FrontierMath Tier 4 (v1) | 6.3% | — |

## Knowledge

- GPT-5.4 nano: 41.9 (#103)
- MiMo-V2-Omni: 40.5 (#118)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Expert | 1396 | 1449 |
| GPQA Diamond | 78.5% | — |
| SimpleQA Verified | 11.7% | — |
| Vectara Hallucination Rate | 3.1% | — |

## Multimodal

- GPT-5.4 nano: 36.7 (#78)
- MiMo-V2-Omni: 38.6 (#63)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Vision | 1196 | 1228 |

## Multilingual

- GPT-5.4 nano: 48.6 (#140)
- MiMo-V2-Omni: 51.8 (#102)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Non-English | 1359 | 1404 |
| LMArena Chinese | 1392 | 1465 |
| LMArena French | 1396 | 1447 |
| LMArena German | 1367 | 1399 |
| LMArena Japanese | 1343 | 1317 |
| LMArena Korean | 1320 | 1355 |
| LMArena Russian | 1363 | 1412 |
| LMArena Spanish | 1371 | 1434 |

## Instruction Following

- GPT-5.4 nano: 71.9 (#144)
- MiMo-V2-Omni: 75.2 (#66)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Instruction Following | 1362 | 1428 |

## Long Context

- GPT-5.4 nano: 41.6 (#137)
- MiMo-V2-Omni: 44.1 (#76)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Longer Query | 1366 | 1442 |

## Writing & Preference

- GPT-5.4 nano: 55.7 (#142)
- MiMo-V2-Omni: 61.4 (#87)

| Benchmark | GPT-5.4 nano | MiMo-V2-Omni |
|---|---|---|
| LMArena Text | 1372 | 1423 |
| LMArena Creative Writing | 1314 | 1392 |
| LMArena Multi-Turn | 1382 | 1445 |

## FAQ

### Is GPT-5.4 nano better than MiMo-V2-Omni?

MiMo-V2-Omni is the stronger model overall, scoring 43.6 to 41.9 on the Noometry Index.

### Which is cheaper, GPT-5.4 nano or MiMo-V2-Omni?

MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; GPT-5.4 nano lists at $0.20 and $1.25.

### Is GPT-5.4 nano or MiMo-V2-Omni better for coding?

They score almost the same on coding (43.6 vs 43.3); test both on your own repository before choosing.

### Which has the bigger context window?

GPT-5.4 nano does, with 400K tokens against 262K.

### How many benchmarks do GPT-5.4 nano and MiMo-V2-Omni share?

18 benchmarks have published results for both models. GPT-5.4 nano has 40 scored results on Noometry and MiMo-V2-Omni has 18.