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GPT-5.2-Codex

OpenAI releases GPT-5.2-Codex, an agentic coding model optimized for long-horizon software engineering and defensive cybersecurity.

Model Release

What Happened

OpenAI released GPT-5.2-Codex as a GPT-5.2 variant optimized for agentic coding inside Codex, with additional emphasis on long-horizon work and cybersecurity-relevant tasks.

Why It Matters

This type of specialization highlights how frontier labs increasingly ship separate “work models” tuned for real-world engineering harnesses, not just chat interaction.

Technical Details