Zed introduces Delta, a multiplayer app for coding with agents, in private beta

Archive entry: this covers an event from August 12, 2026, and we published it on November 8, 2026. The details come from sources dated at the time and may have changed since.

On August 12, 2026, Zed Industries introduced Delta in the post Introducing Delta, written by Nathan Sobo. Delta (delta.dev) was a shared, multiplayer workspace for working with agents on code and reviewing their output, and a separate app, not a Zed feature.

What changed

• DeltaDB: the layer under Delta kept conversations and worktrees synchronized live and recorded edits and conversations between commits on top of an existing git repository.
• Review: comments could target the conversation or any worktree line and stayed anchored as the code changed.
• Cloud runners: they kept the agent working after the user closed their laptop.
• Browser threads: shared threads opened in a browser with nothing to install; the browser build ran the Rust app as WebAssembly with WebGL rendering.
• Outside agents: Delta worked with outside agent harnesses, starting with Claude Code, mirroring a terminal session into a thread in real time.

What it meant for people building with AI

Teams working with coding agents got a way to share and review agent conversations and code changes live instead of through pull requests. Delta was a separate app rather than a Zed feature, and it worked with outside agents, starting with Claude Code.

Beta access

The first private-beta invites went out on August 12, 2026, with early-access sign-up at zed.dev/deltadb. The post gave no pricing for Delta.

Sources

• Introducing Delta (Zed Industries, August 12, 2026, official)

Written with AI assistance, strictly from the sources listed above. Before it went live, automated checks verified its dates, sources and every language edition.