Superhuman opens new Seattle office, joining wave of AI companies expanding in the region

A rendering of the reception area at Superhuman’s new Seattle office in South Lake Union. (Superhuman Image) Superhuman , the San Francisco company formerly known as Grammarly, opened a 13,501-square-foot office in Seattle’s South Lake Union neighborhood on Tuesday, moving out of a coworking space and giving itself room to hire. The office, at 1000 Dexter Ave.