Company

Sierra Technologies, Inc.

Sierra develops conversational AI agents and software for customer service.

About

Sierra provides a conversational AI platform and cloud-based Agent OS for companies to build and deploy agents that answer questions, resolve problems, and act on customer requests. Its clients include Sonos, SiriusXM, and Weight Watchers. Founded in 2023, the company is based in San Francisco, US, and was founded by Bret Taylor and Clay Bavor. It raised USD 950 million in Series E funding in May 2026, co-led by Tiger Global Management and GV, with participation from Benchmark, Sequoia, and Greenoaks Capital.

4Funding rounds

6Investors

Sign in to see more

Funding rounds, investors and people for this company come from licensed data. A free account shows the first rows of each section; an approved contribution opens every profile in full.

Sign in