# Chatgpt 4o Latest 20250326 vs MiMo-V2.5

> Chatgpt 4o Latest 20250326 and MiMo-V2.5 score almost the same on the Noometry Index (43.8 vs 43.4), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-mimo-v2-5
- Last updated: 2026-10-11
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 4 categories and MiMo-V2.5 in 5 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 28.6.
- MiMo-V2.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 43.8 | 43.4 |
| Rank | 82 | 93 |
| Context | — | 1.05M |
| Input $/M | — | $0.14 |
| Output $/M | — | $0.28 |
| Weights | Proprietary | Open |

## Coding

- Chatgpt 4o Latest 20250326: 41.6 (#122)
- MiMo-V2.5: 43.9 (#81)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1413 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| ALE-Bench | — | 513.95 |

## Reasoning

- Chatgpt 4o Latest 20250326: 33.8 (#71)
- MiMo-V2.5: 28.6 (#101)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1450 |
| Kagi LLM Benchmark | 75% | — |
| CritPt | — | 3.7% |

## Math

- Chatgpt 4o Latest 20250326: 38.6 (#134)
- MiMo-V2.5: 36.8 (#163)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1407 | 1436 |
| ProofBench | — | 16% |

## Knowledge

- Chatgpt 4o Latest 20250326: 39.2 (#137)
- MiMo-V2.5: 40.8 (#115)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1401 | 1460 |
| Confabulations | 16.6% | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 39.6 (#58)
- MiMo-V2.5: 39.8 (#54)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | 1243 | 1247 |

## Multilingual

- Chatgpt 4o Latest 20250326: 52.9 (#76)
- MiMo-V2.5: 51.9 (#99)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1419 | 1404 |
| LMArena Chinese | 1457 | 1468 |
| LMArena French | 1446 | 1447 |
| LMArena German | 1423 | 1421 |
| LMArena Japanese | 1405 | 1306 |
| LMArena Korean | 1396 | 1363 |
| LMArena Russian | 1429 | 1395 |
| LMArena Spanish | 1434 | 1416 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.0 (#107)
- MiMo-V2.5: 75.5 (#60)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1434 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#107)
- MiMo-V2.5: 44.2 (#73)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1413 | 1445 |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.6 (#72)
- MiMo-V2.5: 61.6 (#86)

| Benchmark | Chatgpt 4o Latest 20250326 | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1429 | 1428 |
| LMArena Creative Writing | 1405 | 1393 |
| LMArena Multi-Turn | 1454 | 1445 |
| EQ-Bench Creative Writing | 1501 | — |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than MiMo-V2.5?

Chatgpt 4o Latest 20250326 and MiMo-V2.5 score almost the same on the Noometry Index (43.8 vs 43.4), so choose on price, context window or the category you care about most.

### Is Chatgpt 4o Latest 20250326 or MiMo-V2.5 better for coding?

MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 41.6 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and MiMo-V2.5 share?

18 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and MiMo-V2.5 has 23.