Anthropic Tops OpenAI 34.4% to 32.3% in Ramp's May 2026 AI Index
▲ Ramp data: Anthropic beats OpenAI for the first time The Ramp AI Index is a monthly report from US fintech firm Ramp that tracks how 50,000+ American businesses spend on AI through their corporate cards. In the May 2026 release, Anthropic's Claude overtook OpenAI's ChatGPT for the first time. Because the AI a company pays for usually ends up on its employees' desks, this shift matters far beyond the headlines. What the Ramp AI Index Showed in May 2026 The new numbers are Anthropic 34.4% vs OpenAI 32.3% , a gap of 2.1 points . It looks narrow, but this is the first time Anthropic has ever led OpenAI in US business AI spend. Ramp economist Ara Kharazian told TechCrunch that Anthropic was already ahead in tech, finance, and professional services - the heavy AI-using sectors - and is now closing the remaining gap in other industries. ▲ From 9% to 34.4% in 12 months Why the 9% to 34.4% Jump Is the Real Story The speed is what makes this move historic. One year ago...