San Francisco's AI boom fuels robot fight clubs, drawing techies to unique events. Robots battle in a boxing ring, thrilling audiences with custom programming and costumes.

Fast forward six months and the G1 robot is showing clear signs of improvement, though admittedly it still needs a few tweaks ...

The artificial intelligence boom, which has brought techies flocking back to the city, has fueled a resurgence of live — and sometimes futuristic — events.