OpenAI just made one of its boldest counter moves against rival artificial intelligence (AI) firm Anthropic. OpenAI has officially announced it will acquire Astral, a software startup behind popular open-source Python developer tools.

Astral creates Python development tools such as uv, a package and project manager, and Ruff, a linter and formatter.

Codex is OpenAI’s cloud-based software engineering agent that can work on multiple tasks at the same time, such as answering questions about users’ codebase, fixing bugs, and more. With the acquisition,

Kie.ai''s GPT-5.4 Codex API streamlines front-end development by automating UI code generation, multi-file refactoring, and interface optimization.

OpenAI on Thursday announced the acquisition of Astral, the developer of open source Python tools that include uv, Ruff and ty. It says that it plans to integrate them with Codex, its AI coding agent first released last year,