Ramp data shows Anthropic has more business customers than OpenAI

In short: A new report from Ramp says more of its business customers are now paying for Anthropic than for OpenAI.

What's going on

Ramp, a financial services company that tracks business spending, publishes a monthly AI Index based on what its customers pay for. In the latest report, 34.4% of surveyed businesses were paying for Anthropic services. That is higher than OpenAI’s 32.3%.

This is the first time Anthropic has taken the top spot in Ramp’s data. Ramp economist Ara Kharazian told TechCrunch that Anthropic has already been ahead in industries that adopted these tools early, including finance, tech, and professional services. He said OpenAI still leads in other areas, but that lead has been shrinking over the past couple of months.

The data is not a full count of the whole market. It only reflects companies that use Ramp. Still, the sample includes more than 50,000 companies, which makes it a useful signal.

Other data sources point in a similar direction. OpenRouter, which tracks usage across a different set of users, last ranked OpenAI above Anthropic in December 2025.

Ramp’s numbers also show how fast Anthropic has grown with businesses. In May 2025, about 9% of participating businesses were paying for Anthropic products. Over the next 12 months, that share rose by about 26 percentage points. Over the same period, OpenAI’s share fell by 1 point, and the overall share of businesses paying for some kind of AI product rose by 9 points.

What to watch

Kharazian said he is not sure Anthropic’s lead will last. Watch whether OpenAI regains share, and whether more companies start paying for any AI tools at all as these products spread beyond early adopters.

Source: TechCrunch AI