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....
Rank
#231
Up 33% week over week
Tokens
1.3B
2026-08-14
Requests
37.7K
37,681
Tool calls
-
Input / M
$1.25
Output / M
$10
Cache / M
$0.13
Context
400K
400,000 tokens