What it is
Sierra provides a platform to build and run AI customer service agents across chat, SMS, WhatsApp, email and voice. Tools include Agent Studio, Ghostwriter for building agents from SOPs, and Insights for analytics. It uses outcome-based pricing and lists customers such as Rocket Mortgage, Gap, Uber and Vanguard.
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AI agents for customer support 2026: Sierra, Decagon, Fin, Ada
AI agents for customer support compared: Sierra, Decagon, Intercom Fin and Ada. How per-resolution pricing works, what to measure and how to roll out.
Sierra alternatives
Customer service platform built around Fin, an AI agent priced per resolution.
Customer service suite with ticketing, AI agents and resolution-based AI billing.
AI customer service agents that resolve inquiries across chat, email and voice.
Customer messaging platform with shared inbox, live chat and AI chatbot.
AI customer service agents defined with natural-language procedures.
Helpdesk and customer feedback platform with an AI support agent.