Sierra is a conversational AI company founded in 2023 by Bret Taylor and Clay Bavor. The company focuses on helping businesses create personalized AI agents to improve customer service and brand interaction. Since its public launch in early 2024, Sierra has attracted enterprise clients like WeightWatchers, Sonos, and SiriusXM, showcasing its effectiveness for businesses with high-volume customer support needs.

Sierra's platform features two main components: AgentOS, which allows companies to build and manage AI agents, and Experience Manager, which provides tools for designing branded conversational experiences and monitoring agent performance. The AI agents are trained on specific company data and can perform various tasks, such as updating CRM entries and managing orders. Sierra emphasizes security and compliance, ensuring customer data is protected and used appropriately. The company operates from multiple locations, including New York and San Francisco, and has achieved a valuation of $4.5 billion within its first year.