Anthropic led OpenAI among business customers tracked by corporate card company Ramp in July, though OpenAI closed part of the gap in spending intensity, according to Ramp and TechCrunch. OpenAI still trailed Anthropic in overall adoption, the data showed.
Anthropic reached 43.5% of eligible U.S. businesses in Ramp's sample as of July, up 1.1 percentage points for the month, while OpenAI grew to 39.7%, up 0.23 points, Ramp said. Anthropic first took the adoption lead in May, when it hit 41% against OpenAI's 39%, according to Ramp and TechCrunch.
The adoption numbers hide a spending split: OpenAI's GPT-5.6 Sol model accounted for 25% of tokens and 23% of corporate spend among Ramp's business customers in July, while Anthropic's newer Fable 5 model made up only 6% of tokens and 11.4% of dollars spent despite being Anthropic's most expensive offering, Ramp reported. Ramp's data covers more than 70,000 U.S. businesses that pay for AI services through its platform and excludes large enterprises that route spend through other expense tools, TechCrunch reported.
Ramp said its sample "skews slightly more tech-y" than its typical index, meaning actual adoption of newer, pricier models across the broader economy is likely lower than what shows up in its numbers.
For anyone selling into businesses, the split matters more than the headline share: companies are willing to sign up for a leading lab's platform without necessarily routing their heaviest, most expensive workloads there. Model choice at the point of highest usage, not the logo on the procurement form, is where the real switching cost shows up.