Zed says 33 developers merged 570 changes without pull requests

Zed put Delta, its agent-assisted coding collaboration tool, into public beta on 16 September. The company says Delta replaces the pull request with a shared thread that keeps the developer, the agent conversation and the file changes in one place. Zed also says it has disabled pull requests on Delta's own repository, and 33 developers have merged 570 changes to main through Delta threads since making that switch.

What Delta is

Delta is built around a thread: a running record of an agent-assisted task in which the chat with the agent and the files being changed stay linked. A developer hands the agent a job, discusses and refines it, and can then share the whole thread with a teammate. The teammate joins the same worktrees, can ask the same agent why a particular decision was made, and can open a review sub-thread that carries the parent thread's context. Zed says a reviewer can either request a revision or fix the problem with an agent from inside the review, and add that fix to the parent thread before merging the change.

How it works with Git

Delta runs on DeltaDB, a store that keeps every intermediate edit and agent message between commits, so a commit is still the checkpoint you push, pull and build from. Delta works with existing Git repositories, and a team can use it without moving off GitHub. Zed says it will keep zed-industries/zed itself on GitHub for now because that is where its community files issues and submits changes, and will encourage contributors to share Delta threads alongside their pull requests. A collaborator who never opens Delta still sees a normal Git repository.

The claim about pull requests

Zed's Nathan Sobo, quoted in the blog post, writes that pull requests have been the standard way to ask teammates to review changes for over fifteen years, and that "with agents generating so much code, the diffs we're asking each other to review have mushroomed." His argument is that a big diff carries the change but not the reasoning that produced it, and a reviewer feeding that diff into another agent forces the second agent to reconstruct decisions the author already worked through. Zed says its own developers now open review sub-threads instead of pull requests, and the 570 merged changes came out of that setup.

Delta is available today as a desktop app for macOS, Linux and Windows and as a browser view for reading, sharing and reviewing threads. It is free during the public beta. Zed says it will introduce paid individual and team plans later, and that a free version will remain.

Zed's 33-developer, 570-change figure comes from its own team on its own codebase, so the interesting question for anyone else is whether a shared thread genuinely saves a reviewer time compared with reading a pull request. A team that adopts Delta alongside GitHub for a month can measure its own review times against the pull requests it kept, which is the check worth running before switching a whole workflow.

Source

• Zed, Delta is in public beta, 16 September 2026.
• Paul Sawers, Zed launches Delta because agents made pull requests obsolete, The New Stack, 16 September 2026.