# DeepSeek-V2.5 (Sep 2024) vs Qwen3.5 Max Preview

> Qwen3.5 Max Preview is the stronger model overall, scoring 45.3 to 37.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v2-5-vs-qwen3-5-max-preview
- Last updated: 2026-10-12
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. DeepSeek-V2.5 (Sep 2024) scores higher in 0 categories and Qwen3.5 Max Preview in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Qwen3.5 Max Preview leads 66.0 to 49.8.
- DeepSeek-V2.5 (Sep 2024) has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| Provider | DeepSeek | Alibaba (Qwen) |
| Noometry Index | 37.6 | 45.3 |
| Rank | 200 | 71 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Proprietary |

## Coding

- DeepSeek-V2.5 (Sep 2024): 31.7 (#281)
- Qwen3.5 Max Preview: 44.0 (#77)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Coding | 1309 | 1487 |
| Aider Polyglot | 17.8% | — |
| BigCodeBench Instruct | 48.6% | — |
| BigCodeBench Complete | 53.2% | — |
| HumanEval+ | 83.5% | — |
| MBPP+ | 74.1% | — |

## Reasoning

- DeepSeek-V2.5 (Sep 2024): 25.6 (#145)
- Qwen3.5 Max Preview: 30.8 (#84)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Hard Prompts | 1289 | 1483 |

## Math

- DeepSeek-V2.5 (Sep 2024): 35.9 (#177)
- Qwen3.5 Max Preview: 40.1 (#94)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Math | 1288 | 1474 |

## Knowledge

- DeepSeek-V2.5 (Sep 2024): 34.8 (#193)
- Qwen3.5 Max Preview: 41.8 (#107)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Expert | 1266 | 1489 |

## Multilingual

- DeepSeek-V2.5 (Sep 2024): 42.5 (#193)
- Qwen3.5 Max Preview: 56.2 (#22)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Non-English | 1273 | 1465 |
| LMArena Chinese | 1318 | 1534 |
| LMArena French | 1289 | 1484 |
| LMArena German | 1258 | 1487 |
| LMArena Japanese | 1228 | 1495 |
| LMArena Korean | 1209 | 1438 |
| LMArena Russian | 1289 | 1471 |
| LMArena Spanish | 1248 | 1470 |

## Instruction Following

- DeepSeek-V2.5 (Sep 2024): 67.5 (#194)
- Qwen3.5 Max Preview: 77.0 (#31)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Instruction Following | 1280 | 1467 |

## Long Context

- DeepSeek-V2.5 (Sep 2024): 39.5 (#174)
- Qwen3.5 Max Preview: 45.2 (#45)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Longer Query | 1301 | 1476 |

## Writing & Preference

- DeepSeek-V2.5 (Sep 2024): 49.8 (#187)
- Qwen3.5 Max Preview: 66.0 (#41)

| Benchmark | DeepSeek-V2.5 (Sep 2024) | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Text | 1294 | 1470 |
| LMArena Creative Writing | 1285 | 1464 |
| LMArena Multi-Turn | 1297 | 1478 |

## FAQ

### Is DeepSeek-V2.5 (Sep 2024) better than Qwen3.5 Max Preview?

Qwen3.5 Max Preview is the stronger model overall, scoring 45.3 to 37.6 on the Noometry Index.

### Is DeepSeek-V2.5 (Sep 2024) or Qwen3.5 Max Preview better for coding?

Qwen3.5 Max Preview scores higher on coding benchmarks: 44.0 versus 31.7 in the Noometry coding category.

### How many benchmarks do DeepSeek-V2.5 (Sep 2024) and Qwen3.5 Max Preview share?

17 benchmarks have published results for both models. DeepSeek-V2.5 (Sep 2024) has 22 scored results on Noometry and Qwen3.5 Max Preview has 17.