Open AI has announced a deal to buy Astral, a move that could reshape the battle for AI-assisted software development. The OpenAI acquisition of Astral for Codex’s story is significant because it brings a well-known suite of Python developer tools closer to OpenAI’s growing coding platform.
The companies did not reveal financial terms. However, they said Astral’s tools will be integrated into Codex, Open AI’s AI coding system, as the company tries to strengthen its position against Anthropic and other rivals in the fast-growing coding tools market.
OpenAI has been expanding Codex as competition in AI coding tools heats up. The company said the acquisition will bring Astral’s developer tooling directly into that ecosystem, giving Codex deeper links to tools Python developers already use.
That matters because Anthropic’s Claude Code has gained traction with developers, increasing pressure on OpenAI to improve its own coding products.
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OpenAI also said Codex now has more than 2 million weekly active users. According to the company’s announcement cited in current coverage, that represents a threefold increase in users and a fivefold jump in usage since the start of the year.
Why Astral Matters in Python Development
Astral has built a strong reputation in the Python ecosystem through open-source tools designed to improve speed and reliability in development workflows. Its broader company materials emphasise open-source, permissive licensing, and integration with the wider Python ecosystem.
Recent coverage also identified Astral as the company behind tools such as uv, Ruff, and ty, which are widely used by Python developers.
That makes the acquisition strategically important for OpenAI. Instead of offering only code generation, the company is moving toward deeper workflow support within development environments and tooling that programmers already trust.
Astral founder and CEO Charlie Marsh said OpenAI will continue supporting the company’s open-source tools after the deal closes. That point is likely to matter to developers watching closely for any change in how Astral’s products are maintained.
For OpenAI, the deal signals a broader push to gain more ground in the AI coding market. With Codex usage rising and competition from Anthropic intensifying, the company appears focused on making its platform more useful across the full software development workflow.
