How useful are AI copilots right now?

The past year seen an explosion in the rollout of "AI copilots" across many existing apps with the basic premise being type in what you want and the AI creates/configures something in the app for you.

Some examples that come to mind: Typeform - use AI to generate forms; Notion - use AI to write content; Miro - use AI to generate and expand out diagrams; Microsoft Power Automate - use AI to set up an automation; Google Cloud - AI that assists with writing apps and APIs

So what has everyone's experience of how useful these copilots have actually been within existing apps and tools? Any examples of where AI has been a gamechanger, and any examples of where it felt like more of a gimmick?