Sierra, Led by OpenAI Chair Taylor, Raises $950M at $15B Valuation
Sierra, the enterprise AI startup co-founded by OpenAI board chair Bret Taylor, has raised $950 million in new funding at a valuation exceeding $15 billion, according to Seeking Alpha.
The round represents one of the largest AI funding deals of 2026, according to the report.
Taylor, who serves as chairman of OpenAI’s board of directors, co-founded Sierra alongside Clay Bavor, a former Google executive. The company focuses on building AI agents for enterprise customers, positioning itself in the market for businesses seeking to deploy conversational AI across customer-facing operations.
The $15 billion-plus valuation places Sierra among the most valuable private AI companies in the United States.
Market Context
The funding comes amid a broader wave of capital raises in the AI sector, as investors continue to fund companies building enterprise artificial intelligence tools.
Taylor serves as chairman of OpenAI’s board of directors while also co-leading Sierra as a commercial AI company focused on enterprise agent deployment.
Enterprise AI Competition
Sierra competes in the enterprise AI market against established technology companies including Salesforce, Microsoft, and Google, as well as other well-funded startups building AI agent platforms. The funding positions the company to invest in product development and go-to-market efforts.
The raise follows a period of competition among AI startups for both talent and enterprise contracts, with valuations for leading companies continuing to climb.
