Pick a winner in each dimension — change your vote anytime.
Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).
Choose GPT-5.3-Codex if you want codex CLI users and dedicated coding agents. Choose GPT-5.4 Mini if you want high-volume, low-complexity agent steps on a budget.
Editorially it's close: each model leads in 2 of our five dimensions. On price, GPT-5.3-Codex runs about $5.42 per 1M tokens (blended) and is proprietary; GPT-5.4 Mini is about $1.88 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.