AI agents startup for customer service founded by 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 |
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Sierra has acquired Fragment.
Data is community-curated and may be incomplete.