Startup di agenti AI per il customer service fondata da Bret Taylor.
| Date | Round | Amount |
|---|---|---|
| Sep 2025 | Funding round Sierra raised $350 million led by Greenoaks Capital at a $10 billion valuation for its enterprise customer service AI agents. | $350M |
| Feb 2024 | Funding round Sierra, a conversational-AI agents startup co-founded by Bret Taylor, has raised $110M. | $110M |
Sierra has acquired Fragment.