# Grok-2 (Dec 2024) vs MiMo-V2.5

> MiMo-V2.5 is the stronger model overall, scoring 43.4 to 33.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-2-vs-mimo-v2-5
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Grok-2 (Dec 2024) scores higher in 0 categories and MiMo-V2.5 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where MiMo-V2.5 leads 36.8 to 20.8.
- MiMo-V2.5 has downloadable open weights; the other is API-only.

## Snapshot

| | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| Provider | xAI | Xiaomi |
| Noometry Index | 33.7 | 43.4 |
| Rank | 239 | 93 |
| Context | — | 1.05M |
| Input $/M | — | $0.14 |
| Output $/M | — | $0.28 |
| Weights | Proprietary | Open |

## Coding

- Grok-2 (Dec 2024): 33.3 (#258)
- MiMo-V2.5: 43.9 (#81)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1287 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| WeirdML | 22.2% | — |
| LiveBench Coding | 46.4% | — |
| ALE-Bench | — | 513.95 |

## Reasoning

- Grok-2 (Dec 2024): 16.9 (#299)
- MiMo-V2.5: 28.6 (#101)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1272 | 1450 |
| SimpleBench | 22.7% | — |
| CritPt | — | 3.7% |
| LiveBench Reasoning | 54.8% | — |
| DTBench | 65.2% | — |
| LiveBench Data Analysis | 54.5% | — |
| Epoch Capabilities Index | 130.48 | — |
| LiveBench | 54.3% | — |

## Math

- Grok-2 (Dec 2024): 20.8 (#284)
- MiMo-V2.5: 36.8 (#163)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1283 | 1436 |
| OTIS Mock AIME 2024-2025 | 11.5% | — |
| ProofBench | — | 16% |
| LiveBench Math | 54.9% | — |
| MATH Level 5 | 63.5% | — |
| FrontierMath (Feb 2025 set) | 0.7% | — |

## Knowledge

- Grok-2 (Dec 2024): 29.8 (#233)
- MiMo-V2.5: 40.8 (#115)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1254 | 1460 |
| GPQA Diamond | 53.8% | — |
| Confabulations | 20.1% | — |

## Multimodal

- Grok-2 (Dec 2024): —
- MiMo-V2.5: 39.8 (#54)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | — | 1247 |

## Multilingual

- Grok-2 (Dec 2024): 43.1 (#188)
- MiMo-V2.5: 51.9 (#99)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1282 | 1404 |
| LMArena Chinese | 1289 | 1468 |
| LMArena French | 1318 | 1447 |
| LMArena German | 1287 | 1421 |
| LMArena Japanese | 1244 | 1306 |
| LMArena Korean | 1237 | 1363 |
| LMArena Russian | 1286 | 1395 |
| LMArena Spanish | 1281 | 1416 |

## Instruction Following

- Grok-2 (Dec 2024): 66.9 (#202)
- MiMo-V2.5: 75.5 (#60)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1270 | 1434 |
| LiveBench Instruction Following | 69.6% | — |

## Long Context

- Grok-2 (Dec 2024): 38.8 (#190)
- MiMo-V2.5: 44.2 (#73)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1276 | 1445 |

## Writing & Preference

- Grok-2 (Dec 2024): 48.6 (#198)
- MiMo-V2.5: 61.6 (#86)

| Benchmark | Grok-2 (Dec 2024) | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1305 | 1428 |
| LMArena Creative Writing | 1284 | 1393 |
| LMArena Multi-Turn | 1290 | 1445 |
| Short-Story Creative Writing | 63.6% | — |
| LiveBench Language | 45.6% | — |

## FAQ

### Is Grok-2 (Dec 2024) better than MiMo-V2.5?

MiMo-V2.5 is the stronger model overall, scoring 43.4 to 33.7 on the Noometry Index.

### Is Grok-2 (Dec 2024) or MiMo-V2.5 better for coding?

MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 33.3 in the Noometry coding category.

### How many benchmarks do Grok-2 (Dec 2024) and MiMo-V2.5 share?

17 benchmarks have published results for both models. Grok-2 (Dec 2024) has 34 scored results on Noometry and MiMo-V2.5 has 23.