OpenAI regains share on Anthropic among paying business users
Ramp's spending data across 70,000+ U.S. businesses shows Anthropic still holds the lead — nearly 44% of paid AI customers to OpenAI's ~40% — but OpenAI has grown faster through Q3. The flip-flop cuts against the idea that enterprise AI spend is sticky. It also reveals a bigger trend: nearly 56% of Ramp's paying customers now shell out for AI, so both labs win as the market expands.