AI Startup Sierra Hits $100M Revenue in 21 Months, Reaches $10B Valuation

Nov 24, 2025
TechCrunch
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Summary

AI customer service startup Sierra rockets to $100 million in annual revenue within just 21 months, serving major clients like Discord and Rivian while achieving a staggering $10 billion valuation through automated customer service agents.

Key Points

  • Sierra, the AI customer service startup co-founded by former Salesforce co-CEO Bret Taylor, reaches $100 million in annual recurring revenue just 21 months after launch
  • The company serves major clients including Deliveroo, Discord, Rivian, ADT, and Cigna, building AI agents that automate tasks like processing returns and authenticating patients
  • Sierra currently holds a $10 billion valuation from its September funding round, representing a 100x revenue multiple based on its rapid growth in the enterprise AI customer service market

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