OpenAI announced GPT-5 Codex, a new version of GPT-5 built specifically for software engineering tasks.
GPT-5 Codex is designed for interactive coding sessions and long, complex projects, making it a reliable developer partner.
It’s trained to catch critical bugs during code review, handle major refactors, and assist with front-end and back-end development.
The model adapts its reasoning based on task complexity, dashing for small jobs and spending hours on large-scale changes.
The release also introduces major upgrades to Codex across CLI, IDE extensions, and the cloud.
Developers can now use images, track progress with to-do lists, and get faster results through better caching and environment setup.
Codex’s new automated code review system integrates directly with GitHub, offering detailed analysis and fixes before human review.
With 77% of enterprise API usage already skewing toward automation, GPT-5 Codex is positioned to become a key player in modern software development, helping teams move faster with fewer errors while maintaining strong safety measures.
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