tech
November 22, 2025
Bret Taylor's Sierra reaches $100M ARR in under two years
The startup’s rapid growth suggests that enerprises are embracing AI agents.
TL;DR
- Sierra, a startup focused on AI customer service agents, has reached $100 million in annual revenue run rate (ARR).
- The company's rapid growth has surprised its founders, Bret Taylor and Clay Bavor.
- Sierra's customers include tech companies like Discord and Rivian, as well as established businesses such as ADT and Vans.
- The AI agents can handle tasks like patient authentication, processing returns, and mortgage applications.
- Sierra was last valued at $10 billion after raising $350 million in September.
- The company utilizes an outcomes-based pricing model.
- Co-founders Bret Taylor and Clay Bavor have extensive experience from Google, Salesforce, and Facebook.