If you are trying to build a company with AI, proximity matters. San francisco is the obvious answer and an expensive one. Bangalore is the version I can afford.
Stay somewhere around Church Street. Work from a large coworking space. Sit in cafés where builders actually open laptops and argue about products. Speak to people before you feel qualified.
The point is not that one café has magical coffee. The point is density. One useful conversation leads to a tool, a person, a meetup, or a question you did not know enough to ask.
This advice fits people who enjoy technical curiosity and talking to strangers. If you hate both, the city will not do the work for you.
Location is not destiny. It is a way to increase the number of useful collisions available in an ordinary day.