This is a version of GPT-5.2, further optimized for agent-based coding in Codex. OpenAI says that in addition to general improvements, it has placed a strong emphasis on enhancing cybersecurity.
The model is now available to all paid users.
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gpt-5.2has been shining is lmarena'swebdevranking, this makes sense. I hope for them that they don't eff this up too, because they've been losing nearly every other race lately; capital efficiency is low at the moment.