Anthropic Surpasses OpenAI in U.S. Business AI Adoption

Anthropic has surpassed OpenAI in U.S. business adoption of AI services for the first time, according to the latest Ramp AI Index released in May 2026. Data from over 50,000 companies tracked by the fintech platform shows 34.4 percent paying for Anthropic products in April, compared to 32.3 percent for OpenAI. The shift marks a rapid turnaround, with Anthropic quadrupling its share from under 9 percent in May 2025, while OpenAI's grew by just 0.3 percentage point.

Ramp lead economist Ara Kharazian attributed the gains to Anthropic's early strength among high-adoption sectors like finance, technology and professional services, where it now leads with shares such as 63 percent in information technology versus OpenAI's 54 percent. Overall AI spending reached half of tracked businesses, up from 35 percent a year earlier. Claude Code, Anthropic's AI coding tool, fueled much of the momentum, accounting for an estimated 4 percent of public GitHub commits worldwide, double the rate from January.

Cat Wu, Anthropic's head of product for Claude Code and Cowork, highlighted the company's strategy during an interview at the second annual Code with Claude conference in San Francisco. "The...