Check out https://shakespeare.diy over Replit. Our platform is fully open source and allows for user choice and freedom. It's so much better than Replit in this regard.
That said, it depends on what you're building. Some things can be seen as production ready and others might need some clean up or enhancement when done. The latest models from Anthropic, such as Claude Opus 4.5 are so damn good. I mean damn good. You might be surprised with what it's able to build. I wouldn't call what it's able to do as PoC, again, depending on the complexity of the site.