Codex has introduced several new features including a new extension for popular development tools, an improved CLI for local environments, and enhanced task management capabilities that integrate local and cloud tasks. The updates, which leverage GPT-5, also include support for Codex-driven code reviews in GitHub, marking a significant advancement in developer productivity.

Codex is a cloud-based software engineering agent designed to assist developers by performing tasks such as writing features, fixing bugs, and generating pull requests in parallel. Available to various user tiers, it prioritizes security and transparency, ensuring users can validate outputs while mitigating risks associated with AI misuse. Early adopters like Cisco and Temporal have successfully integrated Codex into their workflows to enhance productivity and streamline development processes.