Sierra raises $350M
Sierra: Builds AI agents that handle customer service for large companies.
- Round
- Undisclosed
- Amount
- $350M
- Announced
- Valuation
- $10B
- Lead investors
- Greenoaks Capital
- Also investing
- ICONIQ, Thrive Capital, Sequoia Capital, Benchmark
- Headquarters
- San Francisco, United States
More: Sierra funding history · rounds in September 2025 · rounds in United States
Other Sierra rounds
- Sierra raises $950M Growth, . AI apps. Led by Tiger Global, GV. Sierra builds conversational AI agents for customer service.
- Sierra raises $175M, . AI apps. Led by Greenoaks Capital. Builds AI agents that handle customer service for large companies.