# Codestral vs GPT-5-Codex

> GPT-5-Codex is the stronger model overall, scoring 37.3 to 30.1 on the Noometry Index. Codestral costs 7.6× less per token, which makes it the better buy when GPT-5-Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/codestral-vs-gpt-5-codex
- 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 GPT-5-Codex in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where GPT-5-Codex leads 41.9 to 26.9.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 32.5% for Codestral and 70.3% for GPT-5-Codex.
- Codestral is cheaper at $0.30 / $0.90 per million input/output tokens, against $1.25 / $10 for GPT-5-Codex.
- GPT-5-Codex accepts more context: 400K tokens versus 256K.
- Codestral has downloadable open weights; the other is API-only.

## Snapshot

| | Codestral | GPT-5-Codex |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Noometry Index | 30.1 | 37.3 |
| Rank | 287 | 190 |
| Context | 256K | 400K |
| Input $/M | $0.30 | $1.25 |
| Output $/M | $0.90 | $10 |
| Weights | Open | Proprietary |

## Coding

- Codestral: 26.9 (#316)
- GPT-5-Codex: 41.9 (#100)

| Benchmark | Codestral | GPT-5-Codex |
|---|---|---|
| Aider Polyglot | 11.1% | — |
| WeirdML | — | 54.5% |
| BigCodeBench Instruct | 41.8% | — |
| BigCodeBench Complete | 52.5% | — |
| ALE-Bench | 137.78 | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |

## Agentic & Tool Use

- Codestral: —
- GPT-5-Codex: 30.8 (#66)

| Benchmark | Codestral | GPT-5-Codex |
|---|---|---|
| Terminal-Bench | — | 44.3% |

## Reasoning

- Codestral: 19.1 (#244)
- GPT-5-Codex: 30.0 (#80)

| Benchmark | Codestral | GPT-5-Codex |
|---|---|---|
| Kagi LLM Benchmark | 32.5% | 70.3% |

## FAQ

### Is Codestral better than GPT-5-Codex?

GPT-5-Codex is the stronger model overall, scoring 37.3 to 30.1 on the Noometry Index. Codestral costs 7.6× less per token, which makes it the better buy when GPT-5-Codex's lead doesn't matter for your workload.

### Which is cheaper, Codestral or GPT-5-Codex?

Codestral is cheaper. It lists at $0.30 per million input tokens and $0.90 per million output tokens; GPT-5-Codex lists at $1.25 and $10.

### Is Codestral or GPT-5-Codex better for coding?

GPT-5-Codex scores higher on coding benchmarks: 41.9 versus 26.9 in the Noometry coding category.

### Which has the bigger context window?

GPT-5-Codex does, with 400K tokens against 256K.

### How many benchmarks do Codestral and GPT-5-Codex share?

1 benchmark has published results for both models. Codestral has 7 scored results on Noometry and GPT-5-Codex has 3.