
Sierra AI
Conversational AI platform for building branded customer-facing agents across every channel.
Data verified Sep 8, 2026
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About Sierra AI
Sierra is a conversational AI platform that lets companies build and deploy autonomous AI agents for customer experience—handling support, driving revenue, and taking backend actions across chat, SMS, WhatsApp, email, voice, and ChatGPT. Aimed at mid-market and enterprise CX and operations teams, it stands out for its outcome-based pricing (you pay for resolved outcomes, not seats) and Ghostwriter, an agent-building agent that turns SOPs, transcripts, and plain-English goals into production-ready multilingual agents.
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