Bret Taylor’s AI startup Sierra has successfully raised $950 million in a new funding round, pushing the company’s valuation to $15.8 billion. This substantial capital injection comes amid a surge of investor interest in AI-powered customer service agents and AI agents more broadly. Sierra’s growth and funding highlight the rapidly expanding market for AI-driven enterprise solutions built on foundational models from leading AI developers such as OpenAI and Anthropic.
Founded by Bret Taylor, co-CEO of Salesforce and former Uber executive, Sierra is positioning itself as a major player in the enterprise AI landscape by offering AI customer service agents designed to streamline and enhance customer interaction experiences. The company recently launched Ghostwriter, an “agent as a service” tool that enables users to build customized AI agents, reflecting a shift toward more automated and intelligent digital customer experiences.
The funding round was led by prominent investors including Tiger Global and GV, underscoring a broader trend in venture capital toward backing AI startups poised to become standards in AI-enhanced customer engagement. Sierra aims to leverage the new funds to scale its technology and establish itself as the global standard for AI-powered customer service, reinforcing the growing relevance of AI agents in enterprise operations and customer support functions. This reflects the wider market momentum for integrating AI agents into diverse business applications.
