Claude Code Ultraplan: Cloud-Based AI Planning in 2026 — A Hands-On Tutorial

Anthropic introduced Ultraplan, a research preview for Claude Code that moves planning into a cloud session.

Developers can review and comment on structured plans in a browser before approving them.

After review, the work can run in the cloud or be sent back to the local terminal.

The feature requires Claude Code v2.1.91+, a GitHub repo, and a Claude.ai account.

It aims to reduce risk and friction for complex coding tasks by separating planning from implementation.