Cohere, the Canada-based AI company that makes AI tools for businesses in regulated industries, announced Friday it would merge with Aleph Alpha, a German company that also builds AI systems for businesses and governments. 

Series, a social networking app that's grown popular on college campuses, announced a $5.1 million pre-seed round from some big names in tech.

Sierra, the AI customer service agent startup founded by technologist Bret Taylor, announced today that it has acquired the YC-backed French startup Fragment.