GPT-5.1-Codex
OpenAI's reasoning coding model with multimodal input and a 400K-token context for software tasks.
Design Arena
Design Arena ranks models on real-world front-end and design tasks — websites, UI components, data viz, SVG and more — through head-to-head human votes, scored as an ELO rating.| Category | ELO | Win rate | Rank |
|---|---|---|---|
| Data viz | 1205 | 50.7% | #45 |
| Mobileapps | 1198 | 53.4% | #17 |
| Game dev | 1197 | 52.3% | #51 |
| Website | 1192 | 56.0% | #59 |
| Code | 1187 | 55.2% | #57 |
Pricing
per 1M tokensInput$1.25 /1M
Output$10 /1M
Cache read$0.125 /1M
Web search$0.01
Model Description
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Author
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Author
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