GPT-5.1-Codex
GPT-5.1 Codex (high) is an AI model from OpenAI.
- Publisher
- OpenAI
- Family
- GPT
- Context
- 400K
- Input
- Output
- License
- proprietary
- Released
- 13 Nov 2025
Cite
Notes
Only stored in your browser.
Context
400K
Weights
Closed
API only
Input
$1.25
/1M tok
Output
$10
/1M tok
Cache read
$0.13
0.10x input
Price & speed via Artificial Analysis · ranked across tracked models · caching via OpenRouter
Reported on 18 evals across 7 domains - best 95.7% on AIME 2025: Problems from the American Invitational Mathematics Examination · #6 of 205