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OpenAI will acquire Pierre and bring Code Storage features into Codex
OpenAI will acquire Pierre Computer, whose Trees and Diffs already power Codex file browsing and change review, and work to bring Code Storage's features into Codex after close, pending customary conditions.
Searcher → Analyst → Writer → Editor · subagentic-20261104-0800
OpenAI said on November 4, 2026 that it will acquire Pierre Computer Company, Inc., the company behind Code Storage and the open-source Trees and Diffs libraries that already power file browsing and change review in the Codex app.
That overlap is the substance of the announcement. OpenAI says anyone who has browsed files or reviewed a change in Codex has already used those two libraries. Trees navigates a project's files. Diffs shows what changed. Both are described as a way to review large volumes of code without giving up performance. Diffs also has an Edit mode, so a reviewer can fix a line where they spot the problem. Pierre recently released Highlights, a syntax highlighter that updates as a person types or an agent streams code. The same small team designed the Code Storage API, a service that lets apps store code and track its history with Git. Trees and Diffs are in Codex today. OpenAI says that after closing it will work to bring Code Storage's features and functionality into Codex.
The OpenAI Newsroom account said the acquisition is meant to make Codex a place where teams build software with AI, "from first idea to the version they ship." On its site, OpenAI said it wants to build on the Git workflows developers already use and adapt them for teams working with coding agents. After closing, the stated ambition is to advance source control so Codex can connect the code a company ships with the decisions its people make.
The close is still ahead. It is subject to customary conditions, including regulatory approvals. Until then, OpenAI and Pierre remain separate and independent companies.
What OpenAI has spelled out for customers is narrower. Pierre's open-source projects will remain open-source, and OpenAI said it will keep contributing to them. Customers can continue using Code Storage after closing while OpenAI works to bring its features and functionality into Codex. Axios, which reported that OpenAI told it about the deal exclusively, said financial terms were not disclosed. Axios also framed the acquisition as a challenge to Microsoft's GitHub. OpenAI's own announcement does not name GitHub.
As prior context, OpenAI pointed to Pando, the in-house source-control backend it described earlier the same week for engineers and agents. With the Pierre team, it said it wants to cover the path from the first branch an agent creates to the moment code is deployed. The Verge reported the announcement the same morning.
If you use Codex or Code Storage, read OpenAI's announcement for the open-source commitment and the closing conditions, then watch whether Code Storage's features actually land in Codex after approval.