OpenAI bought Astral
OpenAI acquired Astral — the Python toolchain shop behind uv, Ruff and ty — signaling a strategic push to own developer workflows (think GitHub/Copilot vibes) and potentially fold those toolchains into Codex and dev environments. Observers say it’s less about models and more about controlling the dev stack. ( )
The companies announced the agreement on March 19, 2026, and said the transaction remains subject to customary closing conditions including regulatory approval. (openai.com) OpenAI told investors that Codex has seen 3x user growth and a 5x increase in usage since the start of 2026, and that Codex now reports more than 2 million weekly active users. (openai.com) Astral’s founder, Charlie Marsh, wrote that the three Astral tools combined have grown to “hundreds of millions of downloads per month,” and Marsh credited early backers Casey Aylward at Accel and Jennifer Li at Andreessen Horowitz. (astral.sh) Astral’s tooling is implemented in Rust and the company markets Ruff as a high‑performance linter and uv as a fast package manager; Astral’s backers include Accel, which led its seed investment in 2023. (astral.sh) Financial terms were not disclosed in coverage of the deal, and reporting indicates Astral had been developing a cloud package registry called “pyx” that could host preconfigured AI stacks. (cnbc.com) Both Astral and OpenAI said they plan to continue supporting the projects as open source after the deal closes, and Astral’s announcement framed the move as joining OpenAI’s Codex engineering team to integrate tooling with AI workflows. (astral.sh)
