It writes probably around 95% of LOC and it also definitely does what I would consider some of the code design

… I do this mostly in Windsurf using the new Gemini 2.5 pro (which just came out recently and is a huge jump up; before that it was mostly Sonnet 3.7). It writes probably around 95% of LOC and it also definitely does what I would consider some of the code design, although there the contribution percentage is much lower and it's definitely more of a thought partner, that can do some things better than I can. There is definitely a lot of collaborative plan writing involved, todo lists with check-off boxes and explicit instructions on the process. …