Devstral Small 2 (24B) vs GPT-5.3-Codex-Spark
Mistral Devstral Small 2 (24B) | OpenAI GPT-5.3-Codex-Spark | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Dec 9 2025 | Feb 12 2026 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Context window | — | 128k |
| Timeline | ||
| Release gap | Devstral Small 2 (24B) shipped 65 days before GPT-5.3-Codex-Spark | |
Which is better: Devstral Small 2 (24B) or GPT-5.3-Codex-Spark?
Devstral Small 2 (24B) and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Devstral Small 2 (24B) shipped 65 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
Devstral Small 2 (24B) is open weight, while GPT-5.3-Codex-Spark is proprietary.
Direct benchmark comparisons are unavailable — Devstral Small 2 (24B) and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks.
Frequently asked questions
Devstral Small 2 (24B) was released by Mistral on Dec 9 2025.
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
Devstral Small 2 (24B) is an open weight model released by Mistral. GPT-5.3-Codex-Spark is a proprietary model released by OpenAI.