Topic

Greenoaks Capital

Sierra Announces $350M in Funding at $10B Valuation to Expand AI Customer Service Agents

Sierra, the enterprise AI agent startup founded in 2024 by Bret Taylor and Clay Bavor, has secured a $350 million funding round led by Greenoaks Capital, valuing the company at $10 billion. The latest

5 Sep 2025 · 1 min read

Business & Markets · Startups

AI Startup Sierra, Co-Founded by OpenAI Chair Bret Taylor, Hits $4.5B Valuation with $175M Funding Led by Greenoaks Capital

29 Oct 2024

Greenoaks Capital

Sierra Announces $350M in Funding at $10B Valuation to Expand AI Customer Service Agents

AI Startup Sierra, Co-Founded by OpenAI Chair Bret Taylor, Hits $4.5B Valuation with $175M Funding Led by Greenoaks Capital

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Greenoaks Capital

Sierra Announces $350M in Funding at $10B Valuation to Expand AI Customer Service Agents

AI Startup Sierra, Co-Founded by OpenAI Chair Bret Taylor, Hits $4.5B Valuation with $175M Funding Led by Greenoaks Capital

Trending today

Reco Announces $55M in Funding to Tackle AI Agent Sprawl Across Enterprises

xAI’s Dot.com Redirect to Grok Sparks Speculation of a Jab at OpenAI’s Dots

ElevenLabs Doubles Valuation to $22B Through $300M Employee Tender Offer

Fort Robotics Advances SPAC Deal With Confidential S-4 Filing

OpenAI Eyes $30B Pre-IPO Round at $1.4T Valuation

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