GPT-5 Codex
GPT-5 Codex (high) is an AI model from OpenAI.
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Notes
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Context
400K
Input
$1.25
/1M tok
Output
$10
/1M tok
Cache read
$0.06
0.05x input
Price & speed via Artificial Analysis · ranked across tracked models · caching via OpenRouter
Reported on 10 evals across 7 domains - best 98.7% on AIME 2025: Problems from the American Invitational Mathematics Examination · #2 of 205