Bret Taylor’s Startup Soars to $4.5B Valuation

Bret Taylor’s AI startup Sierra has surged to a $4.5 billion valuation, up from $1 billion earlier this year, with a fresh $175 million funding round led by Greenoaks Capital. This significant valuation increase comes as Sierra, co-founded by former Salesforce co-CEO Bret Taylor and former Google executive Clay Bavor, seeks to redefine customer service with advanced AI agents tailored to reflect each brand’s unique voice. Taylor, who also chairs OpenAI’s board and previously helmed Twitter’s board during Elon Musk’s acquisition, brings extensive tech expertise to Sierra. He co-founded the company with Bavor, a long-time Google veteran who spearheaded the company’s virtual reality division and led Google Labs. Sierra’s objective is to bridge the gap in customer service acro