I'd like to have an AI chatbot or assistant in the web browser to summarise, search, answer and validate stuff. Especially when the search results are full of useless ads and crap, I don't want to see them anymore. But I want vadliation.

This AI assistant will be my "kid" (run on my own machine) and listen to my instructions, not Google's or anyone else's. Any interaction with it remains private unlike web search. It should run efficiently on a normal desktop like Stable Diffusion - that will be the hardest part. Go Stability.ai!