2025-09-05
Today, we're announcing that we've raised $350M additional capital at a valuation of $10B, led by Greenoaks, which is doubling down on Sierra.
CNBC
Bret Taylor's Sierra raised $350M at a $10B valuation, up from $4.5B in October 2024, and says its AI customer service agents are used by “hundreds of millions”
When I was considering joining just over 6 months ago … Florian Dahlhausen : Excited to announce that Sierra has raised $350M additional capital at a valuation of $10B, led by Gree...
2024-10-10
Today we're excited to announce a new way to interact with Sierra agents: voice. Learn more about how this new capability is transforming customer interactions in our latest blog post.: https://sierra.ai/... [video]
The Information
Sources: Sierra, an AI agent startup co-founded by former Salesforce co-CEO Bret Taylor, is raising hundreds of millions led by Greenoaks at a $4B+ valuation
Millions of people around the world have chatted with AI agents powered by Sierra … Ashley Capoot / CNBC : OpenAI Chair Bret Taylor talks AI agents, regulation and the technology's...