Zed opened private beta for Delta on August 12. It’s not a plugin, not a panel bolted onto the Zed editor. It’s a separate application: a multiplayer environment for coding with agents and reviewing what they build. 264 points on HackerNews, the loudest non-model launch of the day.
What it actually does
The unit is a thread. A conversation with an agent plus the worktree it’s editing, replicated live to everyone invited. Your teammate opens the thread, watches Claude Code work in real time, drops a comment on line 40, and that comment stays anchored to line 40 as the agent keeps rewriting the file. Someone else picks the task up asynchronously tomorrow. Threads are private until shared.
Runs native and in the browser — same app compiled to WebAssembly and WebGL. Third-party agent harnesses like Claude Code sync in from your terminal. Diffs and transcripts render in full, no truncated summaries.
Why it’s worth watching
Underneath is DeltaDB, the CRDT version control Zed shipped earlier this year: it records every operation between commits, not just the snapshots, and links each edit to the conversation that caused it. Git can’t tell you why code took its shape when an agent wrote it in four hundred invisible steps.
Zed’s bet: agent collaboration isn’t an editor feature. It needs its own product. Invite-only for now, no public API, no pricing yet.
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