Pick a winner in each dimension — change your vote anytime.
Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).
Choose Devstral 2 if you want dedicated open-weight coding agents. Choose GPT-5.3-Codex if you want codex CLI users and dedicated coding agents.
Editorially it's close: each model leads in 2 of our five dimensions. On price, Devstral 2 runs about $0.88 per 1M tokens (blended) and is open-weight; GPT-5.3-Codex is about $5.42 and proprietary.
The model picks the moves; the agent runs the loop, the tools, and the guardrails. Once you've chosen a model, see which agent gets the most out of it.