Delta

What is Delta?

Delta is a multiplayer coding environment that combines agent conversations and code changes into shared threads. It is built by the creators of Zed for developers working with AI agents like Claude Code. The product is currently in Beta and accessible via desktop app, web, mobile, or CLI.

What are the features of Delta?

• Threaded collaboration

  Developers and AI agents work side by side in shared threads where teammates can review, comment, and join sessions in real time.
• Conversation-anchored version control (DeltaDB)

  Records every code edit alongside the prompts and reasoning behind it, persisting history even when swapping models, harnesses, or machines.
• Cross-platform synchronization

  Threads opened in the desktop app, web interface, mobile app, or terminal remain synchronized through DeltaDB.
• Agent and model switching

  Users can change between models such as Claude, GPT, or Gemini, and runtimes including local machines or cloud runners within a thread.
• Context window management

  Holds eight deltas at a time; as a new one enters, the oldest leaves the active window and is recorded in DeltaDB.
• Inline commenting

  Team members can comment on specific lines of code or on the conversation itself, with feedback anchored as the work evolves.

What are the use cases of Delta?

• Reviewing agent-generated code

  A teammate joins an active thread to inspect the exact prompts, tool calls, and decisions an agent made before producing a code change.
• Migrating external agent chats

  Developers can import prior conversations from tools like Conductor into Delta to maintain continuity.
• Switching environments mid-task

  A developer starts a session locally using Claude Code and moves to a cloud runner without losing the conversation or file state.