# Codestral vs Qwen3.5-Flash

> Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 30.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/codestral-vs-qwen3-5-flash
- Last updated: 2026-10-12
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Codestral scores higher in 0 categories and Qwen3.5-Flash in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5-Flash leads 33.7 to 19.8.
- Qwen3.5-Flash is cheaper at $0.10 / $0.40 per million input/output tokens, against $0.30 / $0.90 for Codestral.
- Qwen3.5-Flash accepts more context: 1M tokens versus 256K.

## Snapshot

| | Codestral | Qwen3.5-Flash |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 30.6 | 42.5 |
| Rank | 290 | 112 |
| Context | 256K | 1M |
| Input $/M | $0.30 | $0.10 |
| Output $/M | $0.90 | $0.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Codestral: 27.3 (#321)
- Qwen3.5-Flash: 34.2 (#242)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| ALE-Bench | 137.78 | 221.8 |
| Aider Polyglot | 11.1% | — |
| LMArena WebDev | — | 1244 |
| BigCodeBench Instruct | 41.8% | — |
| LMArena Coding | — | 1412 |
| BigCodeBench Complete | 52.5% | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |

## Agentic & Tool Use

- Codestral: —
- Qwen3.5-Flash: —

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| Vending-Bench 2 | — | 462.69 |

## Reasoning

- Codestral: 19.8 (#251)
- Qwen3.5-Flash: 33.7 (#72)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| Kagi LLM Benchmark | 32.5% | — |
| Chess Puzzles | — | 21% |
| LMArena Hard Prompts | — | 1403 |
| Mystery Game Puzzles | — | 20% |
| DTBench | — | 82.9% |
| LMCA | — | 29.1% |
| Epoch Capabilities Index | — | 143.98 |

## Math

- Codestral: —
- Qwen3.5-Flash: 37.4 (#158)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 18.2% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| LMArena Math | — | 1407 |
| FrontierMath (Feb 2025 set) | — | 6.2% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Codestral: —
- Qwen3.5-Flash: 43.2 (#93)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| GPQA Diamond | — | 82.3% |
| SimpleQA Verified | — | 20.3% |
| Vectara Hallucination Rate | — | 10.5% |
| LMArena Expert | — | 1407 |

## Multilingual

- Codestral: —
- Qwen3.5-Flash: 50.5 (#121)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| LMArena Non-English | — | 1385 |
| LMArena Chinese | — | 1446 |
| LMArena French | — | 1412 |
| LMArena German | — | 1390 |
| LMArena Japanese | — | 1368 |
| LMArena Korean | — | 1344 |
| LMArena Russian | — | 1379 |
| LMArena Spanish | — | 1400 |

## Instruction Following

- Codestral: —
- Qwen3.5-Flash: 72.6 (#139)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1374 |

## Long Context

- Codestral: —
- Qwen3.5-Flash: 42.4 (#124)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| LMArena Longer Query | — | 1392 |

## Writing & Preference

- Codestral: —
- Qwen3.5-Flash: 57.9 (#122)

| Benchmark | Codestral | Qwen3.5-Flash |
|---|---|---|
| LMArena Text | — | 1397 |
| LMArena Creative Writing | — | 1343 |
| LMArena Multi-Turn | — | 1393 |

## FAQ

### Is Codestral better than Qwen3.5-Flash?

Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 30.6 on the Noometry Index.

### Which is cheaper, Codestral or Qwen3.5-Flash?

Qwen3.5-Flash is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Codestral lists at $0.30 and $0.90.

### Is Codestral or Qwen3.5-Flash better for coding?

Qwen3.5-Flash scores higher on coding benchmarks: 34.2 versus 27.3 in the Noometry coding category.

### Which has the bigger context window?

Qwen3.5-Flash does, with 1M tokens against 256K.

### How many benchmarks do Codestral and Qwen3.5-Flash share?

1 benchmark has published results for both models. Codestral has 7 scored results on Noometry and Qwen3.5-Flash has 32.