# Devstral Small 2505 vs Qwen3.6 Plus

> Qwen3.6 Plus is the stronger model overall, scoring 47.3 to 33.9 on the Noometry Index. Devstral Small 2505 costs 7.5× less per token, which makes it the better buy when Qwen3.6 Plus's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/devstral-small-vs-qwen3-6-plus
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Devstral Small 2505 scores higher in 0 categories and Qwen3.6 Plus in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.6 Plus leads 28.5 to 19.1.
- The biggest single-benchmark swing is SciCode: 28.8% for Devstral Small 2505 and 40.7% for Qwen3.6 Plus.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.50 / $3 for Qwen3.6 Plus.
- Qwen3.6 Plus accepts more context: 1M tokens versus 128K.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 33.9 | 47.3 |
| Rank | 228 | 54 |
| Context | 128K | 1M |
| Input $/M | $0.10 | $0.50 |
| Output $/M | $0.30 | $3 |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.6 (#160)
- Qwen3.6 Plus: 40.6 (#125)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| SciCode | 28.8% | 40.7% |
| SWE-bench Verified | — | 57.9% |
| SWE-bench Verified (bash only) | 56.4% | — |
| LMArena WebDev | — | 1461 |
| LMArena Coding | — | 1467 |
| ALE-Bench | — | 670.15 |

## Agentic & Tool Use

- Devstral Small 2505: —
- Qwen3.6 Plus: —

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| Vending-Bench 2 | — | 5,115 |

## Reasoning

- Devstral Small 2505: 19.1 (#243)
- Qwen3.6 Plus: 28.5 (#89)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| CritPt | 0% | 2.9% |
| Kagi LLM Benchmark | 37.7% | — |
| NYT Connections (extended) | — | 60.3% |
| Chess Puzzles | — | 17% |
| Thematic Generalization | — | 59.5% |
| LMArena Hard Prompts | — | 1449 |
| Mystery Game Puzzles | — | 12% |
| DTBench | — | 81.9% |
| LMCA | — | 33.1% |
| Epoch Capabilities Index | — | 147.67 |

## Math

- Devstral Small 2505: —
- Qwen3.6 Plus: 50.6 (#44)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 38.2% |
| OTIS Mock AIME 2024-2025 | — | 93.3% |
| LMArena Math | — | 1450 |
| FrontierMath (Feb 2025 set) | — | 26.2% |
| FrontierMath Tier 4 (v1) | — | 8.3% |

## Knowledge

- Devstral Small 2505: —
- Qwen3.6 Plus: 56.1 (#40)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| GPQA Diamond | — | 88.4% |
| SimpleQA Verified | — | 44.1% |
| LMArena Expert | — | 1456 |

## Multilingual

- Devstral Small 2505: —
- Qwen3.6 Plus: 53.5 (#66)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| LMArena Non-English | — | 1424 |
| LMArena Chinese | — | 1478 |
| LMArena French | — | 1454 |
| LMArena German | — | 1451 |
| LMArena Japanese | — | 1389 |
| LMArena Korean | — | 1381 |
| LMArena Russian | — | 1434 |
| LMArena Spanish | — | 1432 |

## Instruction Following

- Devstral Small 2505: —
- Qwen3.6 Plus: 75.2 (#70)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| LMArena Instruction Following | — | 1425 |

## Long Context

- Devstral Small 2505: —
- Qwen3.6 Plus: 45.1 (#48)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| CL-bench | — | 20.3% |
| LMArena Longer Query | — | 1440 |

## Writing & Preference

- Devstral Small 2505: —
- Qwen3.6 Plus: 62.4 (#78)

| Benchmark | Devstral Small 2505 | Qwen3.6 Plus |
|---|---|---|
| LMArena Text | — | 1437 |
| LMArena Creative Writing | — | 1405 |
| LMArena Multi-Turn | — | 1438 |

## FAQ

### Is Devstral Small 2505 better than Qwen3.6 Plus?

Qwen3.6 Plus is the stronger model overall, scoring 47.3 to 33.9 on the Noometry Index. Devstral Small 2505 costs 7.5× less per token, which makes it the better buy when Qwen3.6 Plus's lead doesn't matter for your workload.

### Which is cheaper, Devstral Small 2505 or Qwen3.6 Plus?

Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Qwen3.6 Plus lists at $0.50 and $3.

### Is Devstral Small 2505 or Qwen3.6 Plus better for coding?

Qwen3.6 Plus scores higher on coding benchmarks: 40.6 versus 38.6 in the Noometry coding category.

### Which has the bigger context window?

Qwen3.6 Plus does, with 1M tokens against 128K.

### How many benchmarks do Devstral Small 2505 and Qwen3.6 Plus share?

2 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Qwen3.6 Plus has 37.