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GPT-5.2-Codex

Multimodalby OpenAI·Model page

OpenAI's reasoning coding model with multimodal input and a 400K-token context for software tasks.

Max output

Most tokens the model can return in a single response.

128Ktokens
Reasoning
Reasoning-first model

Works through a step-by-step chain of thought before answering.

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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.
CategoryELOWin rateRank
Androidnative117647.5%#18
Mobileapps116647.2%#25
Godotgamedev114247.8%#19
Webapps111240.1%#27
Fullstack105037.0%#31

Pricing

per 1M tokens
Input$1.75 /1M
Output$14 /1M
Cache read$0.175 /1M
Web search$0.01

Model Description

GPT-5.2-Codex is an upgraded version of GPT-5.1-Codex optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....

Author
O
OpenAI
Organization · ✓
openai
Details
Downloads
Likes
AccessClosed Source
Context400K tokens
Input price$1.75 /1M
Output price$14 /1M
CreatedJan 14, 2026
Updated
View on Hugging Face
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GPT-5.2-Codex — AI Model Details | Applied