Codex has already seen 3x user growth and 5x usage increase since the start of the year, and has over 2 million weekly active users.

Our goal with Codex is to move beyond AI that simply generates code and toward systems that can participate in the entire development workflow—helping plan changes, modify codebases, run tools, verify results, and maintain software over time. Astral’s developer tools sit directly in that workflow. By integrating these systems with Codex after closing, we will enable AI agents to work more directly with the tools developers already rely on every day.

Python has become one of the most important languages in modern software development, powering everything from AI and data science to backend systems and developer infrastructure.

Together these tools help developers manage projects, enforce quality, and catch errors early in the development process. With Astral joining OpenAI, we’ll continue to support these open source projects while exploring ways they can work more seamlessly with Codex—enabling AI systems to operate across the full Python development workflow. Our aim is simple: help developers move faster while maintaining the reliability and performance their workflows depend on.