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Sierra raises $950M as the race to own enterprise AI gets serious
Bret Taylor’s AI startup Sierra is raising a $950 million funding round led by Tiger Global and GV, the company announced Monday, pushing its post-money valuation above $15 billion. The raise gives Sierra more than $1 billion to work with — capital the company says it will use to become the “global standard” for AI-powered customer experiences. Like a lot of AI companies, Sierra has, smartly, been very proactive in touting its own growth in a crowded market. The company says it started with just four design partners a couple of years ago. Today it claims to have more than 40% of the Fortune 50 as customers, and says the agents running on its platform are handling billions of interactions, from refinancing mortgages to processing insurance claims, managing returns, and powering nonprofit fundraising campaigns. Indeed, the funding news follows a stretch of breakneck revenue growth as shared by Sierra, which first said it hit $100 million in annual recurring revenue in late November, then published another post in early February, saying it had hit $150 million in ARR. That pacing reflects both the urgency enterprises feel about deploying AI and the costs that come with it. Taylor, who also serves
Bret Taylor's Sierra raises nearly $1 billion months after last capital push
Bret Taylor, co-founder and CEO of Sierra, speaking to CNBC at the World Economic Forum in Davos, Switzerland on Jan. 22nd, 2026.CNBCArtificial intelligence startup Sierra is raising nearly a billion dollars in a new funding round as venture capital investors search for winners in an ongoing deal spree. The San Francisco-based company brought in $950 million in fresh capital at a $15.8 post-money valuation, led by Tiger and Google's GV. Benchmark, Sequoia, Greenoaks and other existing investors also participated. The startup was founded three years ago by OpenAI chairman and former Salesforce co-CEO Bret Taylor, with former Google executive Clay Bavor. Taylor was also chief technology officer at Facebook, and chairman of Twitter when Elon Musk bought the social media network. The Sierra founders met at Google, where Taylor was largely credited with helping create Google Maps and Bavor led virtual reality efforts and Google Labs. Sierra sells AI customer service agents and is positioning itself as a leader in a new class of software companies built on top of foundational models from OpenAI and Anthropic. According to Taylor, the company leverages a "constellation of models" alongside its own fine-tuned proprietary layers.Sierra topped $150 million in annual recurring revenue, or
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