Sierra was co-founded by Bret Taylor, a prominent figure in the tech industry known for his leadership roles at Salesforce and Facebook, and Clay Bavor, a former Google executive with extensive experience in consumer-facing products.

Its mission is to transform customer service by leveraging AI-powered chatbots that provide tailored solutions for enterprises. The platform is designed to integrate seamlessly with existing business systems, allowing it to perform tasks autonomously and efficiently.

It is now valued at $4.5B while raised $175 million in series B.