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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsOpenAI announced an agreement to acquire Astral, a company behind popular open-source Python developer tools—not an AI model or coding assistant. OpenAI says it wants to bring Astral’s tools and engineering expertise into Codex so its coding agent can do more of the surrounding development work, including running tools and checking changes. The announcement describes a planned deal and intended integration, not a confirmed acquisition or completed product changes.
What startup did OpenAI agree to acquire?
OpenAI announced on March 19, 2026, that it had agreed to acquire Astral and bring its developer tooling into the Codex team. Astral founder and CEO Charlie Marsh described the agreement as a step toward joining OpenAI as part of Codex. Both companies framed the transaction as an agreement subject to customary closing conditions, including regulatory approval; the announcement did not say the deal had closed. OpenAI’s announcement and Marsh’s announcement are the companies’ primary statements.
What does Astral make?
Astral develops open-source Python tools that support different parts of a software project’s workflow. They are complementary rather than interchangeable:
| Tool | Workflow role |
|---|---|
| uv | Manages Python dependencies and development environments. |
| Ruff | Checks Python code for linting issues and formats it. Astral describes Ruff as a Python linter written in Rust. |
| ty | Helps with type checking and type safety. |
Astral’s product overview describes its tools and their open-source nature. These tools do not generate code like an AI model. They help developers manage projects and assess code as it is written or changed.
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Why does OpenAI want Astral for Codex?
OpenAI’s stated aim is to move Codex beyond generating code toward taking part in more of a development workflow: planning changes, editing codebases, running tools, verifying results, and helping maintain software. Astral’s tools address practical work in that broader process, such as setting up dependencies, enforcing code conventions, and checking types. OpenAI says bringing Astral’s tools and engineering expertise into Codex could help the agent interact more directly with tools developers already use. That is the company’s rationale for the deal, not evidence that integration is complete or that the tools have already improved Codex.
The distinction matters because code generation is only one part of building software. A proposed change still has to fit the project’s environment, follow its conventions, and pass appropriate checks. Astral’s tools can support some of those steps, but the acquisition announcement does not establish that they will make AI-generated software reliable on their own or remove the need for human review and testing. InfoWorld’s coverage of the deal quotes analysts who likewise emphasize the importance of dependencies, validation, and stability in real development work; those comments are interpretation, not independent measurements of productivity.
How large are Codex and Astral’s tools?
The companies published figures alongside the announcement, but the measures describe different things and should not be treated as comparable user counts:
- OpenAI reported more than 2 million weekly active Codex users in its March 19, 2026, announcement. It also said Codex had grown 3x in users and 5x in usage since the start of that year. These are OpenAI’s figures for the period described in the announcement, not later-period measurements. OpenAI’s announcement
- Astral founder Charlie Marsh said on March 19, 2026, that uv, Ruff, and ty together received hundreds of millions of downloads per month. Downloads are not equivalent to monthly active users or unique developers, and this was the founder’s statement rather than an independent audit. Marsh’s announcement
Has the OpenAI–Astral deal closed?
The material available for this article confirms an announced agreement, but not a completed transaction. The Federal Trade Commission’s early-termination notice records that early termination was granted on April 21, 2026. That is a regulatory procedural milestone; by itself, it does not confirm that the acquisition closed. FTC early-termination notices
OpenAI’s March announcement said the companies would remain independent until closing and that the deal was subject to customary conditions, including regulatory approval. The cited company announcements and FTC notice do not establish a closing date. For that reason, the accurate description on the basis of these records is that OpenAI agreed to acquire Astral—not that it has definitively completed the acquisition.
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