Sierra

San Francisco, CA

Sierra builds AI agents that handle customer service for enterprises across chat and voice.

Funding

Last round or tender: Funding round, May 4, 2026, $950M raisedSierra, May 4, 2026Unnamed by the company; led by Tiger Global and GV. The valuation was stated as over $15 billion; the figure recorded is that floor.
Last valuation: $15.00B, May 4, 2026Sierra, May 4, 2026

Secondary venues

Clarity (formerly Hiive)public page seen Oct 7, 2026
Augmentpublic page seen Oct 7, 2026

A venue is listed when its public page named the company on the date shown. Nothing is recorded from behind a login, and no indicative price is shown anywhere on this site.

Reads

Tracked only. No read has been prepared for this company; the figures above are the record.

Sources

Better customer experiences. Built on SierraSierra, May 4, 2026
Sierra raises $950M as the race to own enterprise AI gets seriousTechCrunch, May 4, 2026
About SierraSierra

Researched Oct 7, 2026