# Codestral vs Qwen3.5 Plus

> Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 30.1 on the Noometry Index. Codestral costs 2.0× less per token, which makes it the better buy when Qwen3.5 Plus's lead doesn't matter for your workload.

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

## Summary

- They share 1 benchmark with published results for both. Codestral scores higher in 0 categories and Qwen3.5 Plus in 1 category; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5 Plus leads 32.0 to 19.1.
- Codestral is cheaper at $0.30 / $0.90 per million input/output tokens, against $0.40 / $2.40 for Qwen3.5 Plus.
- Qwen3.5 Plus accepts more context: 1M tokens versus 256K.
- Codestral has downloadable open weights; the other is API-only.

## Snapshot

| | Codestral | Qwen3.5 Plus |
|---|---|---|
| Provider | Mistral AI | Alibaba (Qwen) |
| Noometry Index | 30.1 | 42.3 |
| Rank | 287 | 103 |
| Context | 256K | 1M |
| Input $/M | $0.30 | $0.40 |
| Output $/M | $0.90 | $2.40 |
| Weights | Open | Proprietary |

## Coding

- Codestral: 26.9 (#316)
- Qwen3.5 Plus: —

| Benchmark | Codestral | Qwen3.5 Plus |
|---|---|---|
| ALE-Bench | 137.78 | 621.92 |
| Aider Polyglot | 11.1% | — |
| BigCodeBench Instruct | 41.8% | — |
| BigCodeBench Complete | 52.5% | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |

## Agentic & Tool Use

- Codestral: —
- Qwen3.5 Plus: —

| Benchmark | Codestral | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- Codestral: 19.1 (#244)
- Qwen3.5 Plus: 32.0 (#67)

| Benchmark | Codestral | Qwen3.5 Plus |
|---|---|---|
| Kagi LLM Benchmark | 32.5% | — |
| Chess Puzzles | — | 22% |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.79 |

## Math

- Codestral: —
- Qwen3.5 Plus: 47.9 (#55)

| Benchmark | Codestral | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Codestral: —
- Qwen3.5 Plus: 46.0 (#78)

| Benchmark | Codestral | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |

## Long Context

- Codestral: —
- Qwen3.5 Plus: 42.9 (#109)

| Benchmark | Codestral | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |

## FAQ

### Is Codestral better than Qwen3.5 Plus?

Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 30.1 on the Noometry Index. Codestral costs 2.0× less per token, which makes it the better buy when Qwen3.5 Plus's lead doesn't matter for your workload.

### Which is cheaper, Codestral or Qwen3.5 Plus?

Codestral is cheaper. It lists at $0.30 per million input tokens and $0.90 per million output tokens; Qwen3.5 Plus lists at $0.40 and $2.40.

### Which has the bigger context window?

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

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

1 benchmark has published results for both models. Codestral has 7 scored results on Noometry and Qwen3.5 Plus has 15.