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Plan Mode on Grok Build: every edit blocked until you say yes
Monday, 24 August 2026 10:06 pm BST · GrokBotNews0
x.ai/build’s own copy: start in plan mode for complex work. Diffs stay blocked until you approve, comment on a step, or rewrite the plan. Subagents run beside the parent session instead of freezing it.

The marketing example on x.ai/build is a real class of job: “Migrate auth from sessions to JWT with token rotation.” Plan Mode is supposed to write the plan first, block every edit, then show a clean diff after you approve. You can comment on a single step or throw the whole plan out.
Start in plan mode for complex tasks — every edit is blocked until you approve.
That is the adult version of “the agent ran off and npm-installed the internet.” The 1.0.8 line Elon quoted earlier is the other half: concurrent subagents start faster and no longer freeze the parent; follow-ups send while a subagent is still running; Ctrl+S stashes a draft. Plan Mode decides; subagents grind.
Mouse support is on the current product page next to the fullscreen terminal UI. The same page still calls the CLI keyboard-first. Both can be true: mouse for the plan viewer, keys for the loop.
If a demo skips the plan and jumps to a wall of file writes, that is not the workflow the page is selling. Ask to see the plan.md, then the diffs.
Grok 4.6 is the model behind the harness today. The harness is the product. A good plan on a weaker model still beats a 4.6 dump with no gate.







































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