Mistral Codestral 22B vs OpenAI gpt-oss-20b — side-by-side specs.
Mistral Codestral 22B | OpenAI gpt-oss-20b | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | May 29 2024 | Aug 5 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
| Timeline | ||
| Release gap | Codestral 22B shipped 433 days before gpt-oss-20b | |
Codestral 22B and gpt-oss-20b don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral 22B shipped 433 days before gpt-oss-20b, so benchmark comparisons should account for the intervening progress.
gpt-oss-20b is an open-source / open-weight model; Codestral 22B is proprietary.
Direct benchmark comparisons are unavailable — Codestral 22B and gpt-oss-20b don't publish scores on any of the same benchmarks.