Open any flow in the builder and click the AI Assistant icon (bottom left of the canvas) to get help with that one flow, the same AI Assistant available in every other project type, scoped here to whichever flow you currently have open. There's one message box, type whatever you want and it decides for itself what to do.
Asking a question
Ask about the flow's current structure, what happens if a user sends X, why a branch isn't wired the way you expected, and get an explanation back in text. A genuine question never changes your flow.
Asking for a change
Describe what you want in plain language, e.g. "add a step that asks for an email address and validates it looks real," and the assistant proposes a complete replacement for everything in the flow except its trigger block, which is never touched. Review the summary of what changed, undo is always available if it's not what you meant. If it genuinely can't tell whether, or exactly what, to change, it asks first, right there in the same conversation, instead of guessing.
This requires the separately-paid AI Assistant add-on, see "What's the AI Assistant add-on?" in Account & Billing for what's included and how usage is measured.
Tip: A requested change applies to one flow at a time, exactly like Discord Bot's per-command AI generation, if your bot has several flows, open the one you want changed before asking.