The AI race heats up as businesses switch to a new leader

Businesses in the U. S. are now more likely to pay for Anthropic’s AI tool than OpenAI’s. In April 2026, Anthropic’s adoption hit 34. 4%, while OpenAI’s dropped to 32. 3%. The shift happened quickly—just a year ago, OpenAI led with 32%, and Anthropic barely registered. What changed? Anthropic’s codi