The short version
Willo and Crevio are the closest of any comparison on this site. Both start from a description, both use a team of AI agents, and both keep you in charge of the big decisions.
They split on what the business is. Willo is a strong fit for software and content sites, and it gives you the code. Crevio is built for selling to an audience, meaning courses, memberships, downloads, bookings, and services, and it runs email, social, ads, and even phone calls around them today.
Which one should you pick?
If you want a codebase you own, or you're testing several ideas side by side, look at Willo. If you have something to sell and want the store, the checkout options, and the marketing working now, pick Crevio.