/plan (local plan mode) -- runs in your terminal, Claude reads your local codebase, drafts a plan before touching files. Terminal is occupied.
*/ultraplan -- hands the planning task to a Claude Code on the web session running in the cloud. Opus drafts the plan remotely, your terminal stays free, you review in browser with inline comments, then choose to execute on the web (PR) or teleport the plan back to your terminal.
The meaningful differences for your workflow:
- Requires GitHub repo + Claude Code on the web account
- Snapshot at launch -- local changes after trigger aren't reflected
- Three execution paths on approval: implement in cloud session, teleport to terminal, or save to file
- Remote Control disconnects when ultraplan starts (both use the same claude.ai/code interface)
*Currently in research preview, so treat it as unstable.