OpenAI: GPT-5.1-Codex-Max
openai/gpt-5.1-codex-max
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic...
Modalities
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In / out price
₩2,194 / ₩17,550
1M
Context
400K
Released
Dec 5, 2025
Apps
Apps that use this model the most.
| Apps | tokens |
|---|---|
| Hermes Agent | 11.32T |
| Zazen (Freebuff fork) | 3.16T |
| Cline | 2.56T |
| Kilo Code | 2.44T |
| pi | 1.59T |
| OpenClaw | 1.05T |
| Codex | 938.81B |
| DeepSeek Harness | 847.26B |
| Portkey AI | 639.39B |
| HighLevel | 375.1B |
| ISEKAI ZERO | 364.56B |
| Framer | 348.63B |
| Hello Minds, powered by Ethoswarm | 316.97B |
| ZCode | 279.83B |
| Descript | 253.44B |