A handful hog the headlines, but many function-specific agents are available to developers and users. MIT's latest study explores the broader agentic ecosystem.

Serve Robotics, a San Francisco-based startup spun out of Uber, has emerged as one of the most aggressive players in the race to automate local delivery.

You can do a lot with free AI. But you can do even more if you upgrade. Here's how to decide between all your options.