GPT-5 Codex is the newer model, released after GPT-4.1 Mini.
| Spec | GPT-4.1 Mini | GPT-5 Codex |
|---|---|---|
| Input price | $0.4/M tokens | — |
| Output price | $1.6/M tokens | — |
| Context window | 1.0M tokens | — |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Sep 2025 |
Not enough votes to call it. On the specs, GPT-5 Codex has the edge: bigger model tier, newer.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
GPT-4.1 Mini uses 4.5x more emoji