Sierra AI

About

Sierra AI is a high-growth enterprise AI customer support platform founded by former Salesforce co-CEO Bret Taylor and Google VP Clay Bavor. The platform specializes in creating AI agents that genuinely reflect a company's brand voice and personality through its multi-model architecture using 15+ models. It reached $100M ARR by November 2025 with a $10B valuation, serving customers like SiriusXM, SoFi, Rocket Mortgage, and Brex.

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