Zed launches Delta: version control built for how agents write code
Delta keeps the prompts and corrections Git discards, and syncs Claude Code into shared threads. Plus Grok 4.6 ships at half the price of rivals.
Copy markdown
The commit isn't the source anymore
Delta is a standalone multiplayer app built on DeltaDB, which replicates the agent conversation and the worktree together in real time for everyone in a thread. It works with the Git repo you already have, capturing what happens between commits, so teammates on plain Git still see a normal history.
Why it matters when an agent writes the code
Git permanently discards the prompts and mid-session corrections that produced a change, leaving a reviewer to reconstruct intent from a diff. Delta keeps the conversation anchored to the evolving code, so when something breaks you ask the agent that wrote it to explain or fix it.
Your Claude Code sessions sync straight in
Delta speaks the Agent Client Protocol, so Claude Code and other terminal agents sync live into shared threads with visible history, and a WebAssembly build runs in the browser at delta.dev with no install. The catch: it is private beta, so join the waitlist at zed.dev/deltadb.
Elsewhere: Grok 4.6 undercuts the frontier
xAI's Grok 4.6 is live now in Cursor, the API, and OpenRouter at $2/$6 per million tokens, roughly half of rival frontier models, with a 500K context and a 61 on the Artificial Analysis Intelligence Index, matching GPT-5.6 Sol. Watch the cliff: cross 200K tokens and the whole prompt bills at $4/$12.
Elsewhere: free web search for your agents
Vercel wired Exa web search into its AI Gateway, free through Aug 31. Your agents can call it with the Gateway key you already have, with no separate Exa account or bill this month.