Sierra

Raised $950M, announced 4 May 2026.

Country United StatesSector AI

Round

Sierra raised $950 million at a $15.8 billion valuation, led by Tiger and GV.

Amount: $950M
Announced: 4 May 2026
Leads: Tiger Global, GV
Other investors: Benchmark, Sequoia, Greenoaks
Use of funds: To become the global standard for AI-powered customer experiences and expand its lead over competitors.
Valuation: $15.8B
Checked: Amount and date matched across 3 press sources
Sources: Sierra raises $950 million: Bret Taylor’s AI Agent Startup Now Valued at Over $15 Billion - www.trendingtopics www.trendingtopics
Sierra raises $950M at $15.8B valuation, led by Tiger and GV - Quartz Quartz
Sierra raises $950M as the race to own enterprise AI gets serious - TechCrunch TechCrunch

Builds AI agents that handle customer service and experience for enterprises.

What is Sierra's valuation?

Sierra was valued at $15.8B post-money when it raised $950M on 4 May 2026, according to the announcement.

How much has Sierra raised?

Sierra raised $950M, announced on 4 May 2026.

Who invested in Sierra?

Tiger Global and GV led. Investors include Tiger Global, GV, Benchmark, Sequoia and Greenoaks.