# Devstral Small 2505 vs Qwen3 235B-A22B

> Qwen3 235B-A22B is the stronger model overall, scoring 43.2 to 33.9 on the Noometry Index. Devstral Small 2505 costs 8.2× less per token, which makes it the better buy when Qwen3 235B-A22B's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/devstral-small-vs-qwen3-235b-a22b
- Last updated: 2026-10-10
- Shared benchmarks: 3

## Summary

- They share 3 benchmarks with published results for both. Devstral Small 2505 scores higher in 1 category and Qwen3 235B-A22B in 1 category; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where Qwen3 235B-A22B leads 43.8 to 38.6.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 37.7% for Devstral Small 2505 and 69.4% for Qwen3 235B-A22B.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.70 / $2.80 for Qwen3 235B-A22B.
- Qwen3 235B-A22B accepts more context: 131K tokens versus 128K.

## Snapshot

| | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 33.9 | 43.2 |
| Rank | 228 | 83 |
| Context | 128K | 131K |
| Input $/M | $0.10 | $0.70 |
| Output $/M | $0.30 | $2.80 |
| Weights | Open | Open |

## Coding

- Devstral Small 2505: 38.6 (#160)
- Qwen3 235B-A22B: 43.8 (#72)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| SciCode | 28.8% | 42.4% |
| SWE-bench Verified (bash only) | 56.4% | — |
| Aider Polyglot | — | 59.6% |
| WeirdML | — | 41% |
| LMArena Coding | — | 1445 |

## Agentic & Tool Use

- Devstral Small 2505: —
- Qwen3 235B-A22B: 33.7 (#48)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 52.1% |
| Vending-Bench 2 | — | -11.34 |

## Reasoning

- Devstral Small 2505: 19.1 (#243)
- Qwen3 235B-A22B: 15.8 (#302)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | 69.4% |
| CritPt | 0% | 0% |
| ARC-AGI-2 | — | 1.3% |
| SimpleBench | — | 31% |
| ARC-AGI-1 | — | 11% |
| Chess Puzzles | — | 12% |
| LMArena Hard Prompts | — | 1433 |
| Mystery Game Puzzles | — | 9% |
| DTBench | — | 80.3% |
| LMCA | — | 29.3% |
| Epoch Capabilities Index | — | 143.87 |
| ForecastBench | — | 59.7 |

## Math

- Devstral Small 2505: —
- Qwen3 235B-A22B: 48.5 (#51)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| Omni-MATH | — | 71.8% |
| LMArena Math | — | 1431 |
| MATH Level 5 | — | 68.9% |
| FrontierMath (Feb 2025 set) | — | 8.5% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Devstral Small 2505: —
- Qwen3 235B-A22B: 49.5 (#67)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| GPQA Diamond | — | 80.1% |
| SimpleQA Verified | — | 40.4% |
| MMLU-Pro | — | 84.4% |
| Confabulations | — | 15.6% |
| Vectara Hallucination Rate | — | 9.3% |
| GPQA (HELM) | — | 72.7% |
| LMArena Expert | — | 1460 |

## Multilingual

- Devstral Small 2505: —
- Qwen3 235B-A22B: 52.5 (#84)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| LMArena Non-English | — | 1410 |
| LMArena Chinese | — | 1481 |
| LMArena French | — | 1445 |
| LMArena German | — | 1432 |
| LMArena Japanese | — | 1400 |
| LMArena Korean | — | 1391 |
| LMArena Russian | — | 1411 |
| LMArena Spanish | — | 1429 |

## Instruction Following

- Devstral Small 2505: —
- Qwen3 235B-A22B: 72.8 (#132)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| IFEval | — | 83.5% |
| LMArena Instruction Following | — | 1408 |

## Long Context

- Devstral Small 2505: —
- Qwen3 235B-A22B: 46.1 (#25)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| Fiction.LiveBench | — | 75% |
| LMArena Longer Query | — | 1426 |

## Writing & Preference

- Devstral Small 2505: —
- Qwen3 235B-A22B: 59.8 (#103)

| Benchmark | Devstral Small 2505 | Qwen3 235B-A22B |
|---|---|---|
| LMArena Text | — | 1419 |
| LMArena Creative Writing | — | 1384 |
| Short-Story Creative Writing | — | 83% |
| EQ-Bench Creative Writing | — | 1366 |
| WildBench | — | 86.6% |
| LMArena Multi-Turn | — | 1432 |

## FAQ

### Is Devstral Small 2505 better than Qwen3 235B-A22B?

Qwen3 235B-A22B is the stronger model overall, scoring 43.2 to 33.9 on the Noometry Index. Devstral Small 2505 costs 8.2× less per token, which makes it the better buy when Qwen3 235B-A22B's lead doesn't matter for your workload.

### Which is cheaper, Devstral Small 2505 or Qwen3 235B-A22B?

Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Qwen3 235B-A22B lists at $0.70 and $2.80.

### Is Devstral Small 2505 or Qwen3 235B-A22B better for coding?

Qwen3 235B-A22B scores higher on coding benchmarks: 43.8 versus 38.6 in the Noometry coding category.

### Which has the bigger context window?

Qwen3 235B-A22B does, with 131K tokens against 128K.

### How many benchmarks do Devstral Small 2505 and Qwen3 235B-A22B share?

3 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Qwen3 235B-A22B has 49.