The AI says the site is done.

Then the homepage errors, the buttons overlap, and it added a login flow you never asked for. 🙃 Introduces WebCraftBench: agents actually use the live app, coverage-guided exploration finds what never got reached, then we score aesthetics, usability, and whether the original request was met. On 197 human-validated pairs, it matches human preference 85.3% of the time. Paper: