San Francisco, California, United StatesFounded 2023751+ employeesPrivate
$1.6B raisedGrowth· last: series e (May 2026)· 5 rounds
Sierra AI develops artificial intelligence systems focused on improving customer experience through automated, conversational interactions. Its platform enables businesses to build and deploy AI agents that communicate with users across channels such as chat, voice, email, and messaging, handling both simple inquiries and more complex service tasks.
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