Ahh I was wondering if maybe a switch to Gemini 2.5 had made their agent better...

Yeah Replit basically does everything for me. I don't even know what's going on behind the scenes, I just open the Replit website and start telling it what I want. 

I believe Replit uses Claude Sonnet 3.7 or something like that

Curious why Replit vs something like Cursor?  It is a lot easier to push a demo project to production?  Was thinking of playing around more with vibe coding and was getting intimidated by process of setting up servers etc... which LLM is their agent using?