# Kimi K2 (Jul 2025) vs Qwen3.5 Max Preview

> Qwen3.5 Max Preview is the stronger model overall, scoring 44.7 to 40.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/kimi-k2-vs-qwen3-5-max-preview
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 1 category and Qwen3.5 Max Preview in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5 Max Preview leads 29.6 to 22.7.
- Kimi K2 (Jul 2025) has downloadable open weights; the other is API-only.

## Snapshot

| | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| Provider | Moonshot AI | Alibaba (Qwen) |
| Noometry Index | 40.9 | 44.7 |
| Rank | 134 | 72 |
| Context | 262K | — |
| Input $/M | $0.57 | — |
| Output $/M | $2.30 | — |
| Weights | Open | Proprietary |

## Coding

- Kimi K2 (Jul 2025): 43.1 (#83)
- Qwen3.5 Max Preview: 43.4 (#79)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Coding | 1399 | 1488 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| ALE-Bench | 597.5 | — |

## Agentic & Tool Use

- Kimi K2 (Jul 2025): 32.2 (#59)
- Qwen3.5 Max Preview: —

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |

## Reasoning

- Kimi K2 (Jul 2025): 22.7 (#173)
- Qwen3.5 Max Preview: 29.6 (#81)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Hard Prompts | 1384 | 1483 |
| SimpleBench | 26.3% | — |
| Kagi LLM Benchmark | 64.4% | — |
| Epoch Capabilities Index | 146.02 | — |
| ForecastBench | 60.2 | — |

## Math

- Kimi K2 (Jul 2025): 40.1 (#81)
- Qwen3.5 Max Preview: 37.3 (#99)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Math | 1396 | 1473 |
| Omni-MATH | 65.4% | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Kimi K2 (Jul 2025): 36.9 (#153)
- Qwen3.5 Max Preview: 41.1 (#104)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Expert | 1363 | 1489 |
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |

## Multilingual

- Kimi K2 (Jul 2025): 49.8 (#125)
- Qwen3.5 Max Preview: 56.4 (#21)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Non-English | 1372 | 1465 |
| LMArena Chinese | 1416 | 1534 |
| LMArena French | 1379 | 1483 |
| LMArena German | 1386 | 1487 |
| LMArena Japanese | 1349 | 1497 |
| LMArena Korean | 1324 | 1438 |
| LMArena Russian | 1384 | 1472 |
| LMArena Spanish | 1383 | 1470 |

## Instruction Following

- Kimi K2 (Jul 2025): 71.3 (#151)
- Qwen3.5 Max Preview: 77.2 (#28)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Instruction Following | 1347 | 1467 |
| IFEval | 85% | — |

## Long Context

- Kimi K2 (Jul 2025): 41.2 (#140)
- Qwen3.5 Max Preview: 45.2 (#44)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Longer Query | 1353 | 1477 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |

## Writing & Preference

- Kimi K2 (Jul 2025): 62.5 (#76)
- Qwen3.5 Max Preview: 66.1 (#39)

| Benchmark | Kimi K2 (Jul 2025) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Text | 1380 | 1471 |
| LMArena Creative Writing | 1349 | 1464 |
| LMArena Multi-Turn | 1371 | 1478 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |

## FAQ

### Is Kimi K2 (Jul 2025) better than Qwen3.5 Max Preview?

Qwen3.5 Max Preview is the stronger model overall, scoring 44.7 to 40.9 on the Noometry Index.

### Is Kimi K2 (Jul 2025) or Qwen3.5 Max Preview better for coding?

They score almost the same on coding (43.1 vs 43.4); test both on your own repository before choosing.

### How many benchmarks do Kimi K2 (Jul 2025) and Qwen3.5 Max Preview share?

17 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Qwen3.5 Max Preview has 17.