GPT-5 Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks. The model supports building projects from scratch, feature development, debugging, large-scale refactoring, and code review.
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128,000 tokens
$1.25
$10
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$15
$0.19
Superseded by GPT-5.1 Codex with better steerability