Model comparison
Codestral vs Devstral Small 2505
Devstral Small 2505 is the stronger model overall, scoring 34.3 to 30.6 on the Noometry Index.
Last verified . 1 shared benchmarks.
Mistral AISummary
- They share 1 benchmark with published results for both. Codestral scores higher in 1 category and Devstral Small 2505 in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where Devstral Small 2505 leads 38.9 to 27.3.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 32.5% for Codestral and 37.7% for Devstral Small 2505.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.30 / $0.90 for Codestral.
- Codestral accepts more context: 256K tokens versus 128K.
- Devstral Small 2505 has downloadable open weights; the other is API-only.
Side by side
| Codestral | Devstral Small 2505 | |
|---|---|---|
| Provider | Mistral AI | Mistral AI |
| Noometry Index | 30.6 | 34.3 |
| Released | 2024-05-29 | 2025-05-07 |
| Weights | Proprietary | Open |
| Context window | 256K | 128K |
| Max output | 8K | 128K |
| Input $ / M tokens | $0.30 | $0.10 |
| Output $ / M tokens | $0.90 | $0.30 |
| Results tracked | 7 | 4 |
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Category by category
Coding Devstral Small 2505 leads
Codestral: 27.3 (#321), Devstral Small 2505: 38.9 (#166)
| Benchmark | Codestral | Devstral Small 2505 |
|---|---|---|
| SWE-bench Verified (bash only) | — | 56.4% |
| Aider Polyglot | 11.1% | — |
| SciCode | — | 28.8% |
| BigCodeBench Instruct | 41.8% | — |
| BigCodeBench Complete | 52.5% | — |
| ALE-Bench | 137.78 | — |
| HumanEval+ | 73.8% | — |
| MBPP+ | 61.9% | — |
Reasoning Too close to call
Codestral: 19.8 (#251), Devstral Small 2505: 19.7 (#252)
| Benchmark | Codestral | Devstral Small 2505 |
|---|---|---|
| Kagi LLM Benchmark | 32.5% | 37.7% |
| CritPt | — | 0% |
Frequently asked questions
Is Codestral better than Devstral Small 2505?
Devstral Small 2505 is the stronger model overall, scoring 34.3 to 30.6 on the Noometry Index.
Which is cheaper, Codestral or Devstral Small 2505?
Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Codestral lists at $0.30 and $0.90.
Is Codestral or Devstral Small 2505 better for coding?
Devstral Small 2505 scores higher on coding benchmarks: 38.9 versus 27.3 in the Noometry coding category.
Which has the bigger context window?
Codestral does, with 256K tokens against 128K.
How many benchmarks do Codestral and Devstral Small 2505 share?
1 benchmark has published results for both models. Codestral has 7 scored results on Noometry and Devstral Small 2505 has 4.