#1Anthropic Overtakes OpenAI in Business AI Adoption for the First Time
For the first time ever, more U.S. businesses are paying for Anthropic's Claude than OpenAI's ChatGPT, according to the May 2026 Ramp AI Index. Anthropic's adoption rose 3.8% in April to 34.4% of businesses, while OpenAI fell 2.9% to 32.3%. Over the past year Anthropic has quadrupled business adoption, driven largely by Claude Code, its fastest-growing product ever.
