The misunderstanding might be that I'm thinking about how long it takes a human + an AI to get something done, not an AI by itself. My current understanding is that it's still not generally viable to have LLMs perform architecture/design tasks (it might work in the short run but degrades roughly exponentially in the long run, accruing serious tech debt). Most things I'd consider actual "projects" involve at least some level of design work as well, and that'd need to be included in the estimate.

(And also prompts will need to be refined, etc., unless you have amazing prompt skills it won't immediately deliver what you wanted. Even if it did, the work to put together the AI inputs also needs to be included.)

⇒ I don't think it's easily possible right now to give a time estimate for **the full picture of** a project to be implemented with AI assistance.