GPT-5.1-Codex-Max vs GPT-5 Codex
OpenAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
| GPT-5.1-Codex-Max | GPT-5 Codex | |
|---|---|---|
| Intelligence index | — | 87.1 |
| Developer | OpenAI | OpenAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 400,000 tokens | 400,000 tokens |
| Input price | $1.25 / 1M | $1.25 / 1M |
| Output price | $10.00 / 1M | $10.00 / 1M |
| Speed | — | 180 tok/s |
| Released | December 4, 2025 | September 23, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |