# Kimi K2 (Jul 2025) vs MiMo-V2.5

> MiMo-V2.5 is the stronger model overall, scoring 43.4 to 41.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/kimi-k2-vs-mimo-v2-5
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 2 categories and MiMo-V2.5 in 6 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2 (Jul 2025) leads 42.7 to 36.8.
- MiMo-V2.5 is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.57 / $2.30 for Kimi K2 (Jul 2025).
- MiMo-V2.5 accepts more context: 1.05M tokens versus 262K.

## Snapshot

| | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| Provider | Moonshot AI | Xiaomi |
| Noometry Index | 41.2 | 43.4 |
| Rank | 140 | 93 |
| Context | 262K | 1.05M |
| Input $/M | $0.57 | $0.14 |
| Output $/M | $2.30 | $0.28 |
| Weights | Open | Open |

## Coding

- Kimi K2 (Jul 2025): 42.4 (#102)
- MiMo-V2.5: 43.9 (#81)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1399 | 1469 |
| ALE-Bench | 597.5 | 513.95 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |

## Agentic & Tool Use

- Kimi K2 (Jul 2025): 32.4 (#64)
- MiMo-V2.5: —

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |

## Reasoning

- Kimi K2 (Jul 2025): 23.3 (#179)
- MiMo-V2.5: 28.6 (#101)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1384 | 1450 |
| SimpleBench | 26.3% | — |
| Kagi LLM Benchmark | 64.4% | — |
| CritPt | — | 3.7% |
| Epoch Capabilities Index | 146.01 | — |
| ForecastBench | 60.2 | — |

## Math

- Kimi K2 (Jul 2025): 42.7 (#83)
- MiMo-V2.5: 36.8 (#163)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1397 | 1436 |
| ProofBench | — | 16% |
| Omni-MATH | 65.4% | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Kimi K2 (Jul 2025): 37.3 (#157)
- MiMo-V2.5: 40.8 (#115)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1365 | 1460 |
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |

## Multimodal

- Kimi K2 (Jul 2025): —
- MiMo-V2.5: 39.8 (#54)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | — | 1247 |

## Multilingual

- Kimi K2 (Jul 2025): 49.6 (#130)
- MiMo-V2.5: 51.9 (#99)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1372 | 1404 |
| LMArena Chinese | 1415 | 1468 |
| LMArena French | 1379 | 1447 |
| LMArena German | 1387 | 1421 |
| LMArena Japanese | 1349 | 1306 |
| LMArena Korean | 1325 | 1363 |
| LMArena Russian | 1385 | 1395 |
| LMArena Spanish | 1386 | 1416 |

## Instruction Following

- Kimi K2 (Jul 2025): 71.1 (#156)
- MiMo-V2.5: 75.5 (#60)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1348 | 1434 |
| IFEval | 85% | — |

## Long Context

- Kimi K2 (Jul 2025): 41.2 (#145)
- MiMo-V2.5: 44.2 (#73)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1353 | 1445 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |

## Writing & Preference

- Kimi K2 (Jul 2025): 62.3 (#78)
- MiMo-V2.5: 61.6 (#86)

| Benchmark | Kimi K2 (Jul 2025) | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1380 | 1428 |
| LMArena Creative Writing | 1350 | 1393 |
| LMArena Multi-Turn | 1371 | 1445 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |

## FAQ

### Is Kimi K2 (Jul 2025) better than MiMo-V2.5?

MiMo-V2.5 is the stronger model overall, scoring 43.4 to 41.2 on the Noometry Index.

### Which is cheaper, Kimi K2 (Jul 2025) or MiMo-V2.5?

MiMo-V2.5 is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Kimi K2 (Jul 2025) lists at $0.57 and $2.30.

### Is Kimi K2 (Jul 2025) or MiMo-V2.5 better for coding?

MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2.5 does, with 1.05M tokens against 262K.

### How many benchmarks do Kimi K2 (Jul 2025) and MiMo-V2.5 share?

18 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and MiMo-V2.5 has 23.