I used Sonnet4 to write my last frontend task, fully, with minimal input. It is so much better than ChatGPT it's unbelievable, but while a 6hour coding task was transformed into a 30 minutes supervision task that generated good, but also correct code, I was a bit afraid for new engineers coming into an old project.

How are you supposed to understand code if you don't at least read it and fail a bit?

I'll continue using Sonnet4 for frontend personally, it always had been a pain point in the team and I ended up being the most knowledgeable on it. Unless it's a new code architecture, I will understand what was changed and why, so I have confidence I can handle rapid iteration of code on it, but my coworkers who already struggled with our design will probably have even more struggles.

Sadly I think in the end our code will be worse, but we are a team of 5 doing the work of a team of 8, so any help is welcome (we used to do the work of 15 but our 10x developper sadly (for us) got caught being his excellent self by the CTO and now handle a new project. Hopefully with executive-level pay)