GPT-5.2-Codex launches, setting new benchmarks in AI-Powered coding

The intelligent code generation field marked a major milestone today with the official release of GPT-5.2-Codex, the latest and most advanced AI coding model to date.

Built on the GPT-5.2 architecture and enhanced with specialized optimizations from its predecessor GPT-5.1-Codex-Max, GPT-5.2-Codex is designed to tackle complex software engineering and cybersecurity challenges. A key breakthrough is its native context compaction technology, enabling significantly more efficient handling of large-scale code refactoring and system migration tasks.

The model sets new industry records in authoritative benchmarks:

56.4% accuracy on SWE-Bench Pro (evaluating real-world software engineering tasks)

64.0% accuracy on Terminal-Bench 2.0 (simulating real terminal environments)

It also features improved support for Windows environments and can accurately interpret technical diagrams and UI screenshots during development.

In cybersecurity, GPT-5.2-Codex demonstrates professional-grade capabilities. Its predecessor helped security researcher Andrew MacPherson uncover three critical vulnerabilities in the React framework within a week. The new model further enhances logical reasoning and fuzz testing abilities—performing at a competitive CTF (Capture The Flag) level—though it remains below the “high-risk” threshold per official safety evaluations.

To balance accessibility with responsible deployment, the developers are rolling out GPT-5.2-Codex in stages:

Available now via Codex CLI, IDE extensions, and cloud platforms for paid ChatGPT users

A “Trusted Access” pilot program offers controlled, invite-only access to vetted security organizations for high-sensitivity defense applications

This measured rollout aims to empower developers across the full engineering lifecycle—from codebase navigation to automated vulnerability defense—while maintaining strict safety and compliance standards.