Sierra AI's $10B Valuation Signals Agentic AI Market Shift
By Nick Allyn4 min read
AI startup Sierra, founded by enterprise software veteran Bret Taylor and Google alum Clay Bavor, has secured $350 million in a new funding round, catapulting its valuation to an impressive $10 billion. The financing, announced in early September 2025 and led by existing investor Greenoaks Capital, brings the company’s total capital raised to $635 million