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Certainly vs Sierra
People
Price
Published entry price
$449+per month
Usage-based
AI Customer Service Agents
Annual estimate10 people, entry price
$5,388+
Flat rate
Usage-based
Offer
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AI Customer Service Agents
Overview
Focus
AI Customer Service Agents
Conversational AI
Product
Conversational AI platform for e-commerce brands building chatbots that guide shoppers and automate support.
Sierra builds AI customer experience agents for brands that want conversational support and commerce workflows with stronger control and brand fit.
Headquarters
Copenhagen, Denmark
San Francisco, California
Company size
11-50 employees
Founded
2019
2023
Pricing details
Plan
Published entry price
Published rate
$449+ / month
Usage-based
Billable seats
Flat rate
Free options
Free trial
Pricing source
Source updated
Oct 29, 2026
Oct 29, 2026