Sierra logo

Sierra

Enterprise conversational-AI platform that helps businesses build and operate customer-experience agents across channels.
San Francisco, United States
Current stage: Series EFunded in the last 6 months

Current Funding Stage

Series E

Current recognized equity stage. The rounds below remain the historical funding record.

Funding Rounds

Funding Round: Series E
Funding Date: 4 May, 2026

Funding Round: Funding (stage not disclosed)
Funding Date: 4 Sep, 2025

Funding Round: Funding (stage not disclosed)
Funding Date: 29 Oct, 2024

Funding Round: Funding (stage not disclosed)
Funding Date: 13 Feb, 2024

Investors