Startup radar: Check out 4 new startups from Seattle 

From AI models to real-world solutions: Last year was one of the most productive in the history of the non-profit Allen Institute for Artificial Intelligence (Ai2). Next up: translating all that work into broader impact, CEO Ali Farhadi tells GeekWire. Read more.

Tech Moves: Zillow promotes execs; ZoomInfo CTO resigning; ESS CEO steps down; and more personnel changes.

A bill that would require social media companies to provide protections for users under 18 years old is moving through the Washington state legislature. (Washington State Standard)

• Related: Another bill targeting surge pricing for Uber and Lyft rides also advanced in Olympia this week. Read more.

Today’s the last day to submit GeekWire Awards nominations! Help us select the leading entrepreneurs, innovators, deal makers and non-profit leaders ahead of our annual event in Seattle. Submit nominations and join us April 30.

Hot Links:

• It’s official: Amazon posted higher quarterly revenues than Walmart for the first time, as confirmed by the superstore chain’s newly released financial results. (CNBC)

• Amazon is closing its app store on Android. (TechCrunch; LinkedIn)

• Microsoft Research released a new AI foundational model to control software interfaces and robotic systems. (Ars Technica)

• TitletownTech, a VC firm backed by the Green Bay Packers and Microsoft, launched a $1 million pitch competition. (Titletown Tech)