A survey found that Anthropic has surpassed OpenAI for the first time in the number of enterprise customers.

A TechCrunch report on Tuesday, citing fintech company Ramp's AI Index, said 34.4 percent of companies paying for Anthropic services exceeded OpenAI's 32.3 percent.

It was the first time Anthropic took the top spot. The survey was compiled based on spending data from Ramp customers and included more than 50,000 companies.

Ramp data show Anthropic's growth has stood out over the past year. In May 2025, only 9 percent of companies paid for Anthropic services, but that share rose by 26 percentage points over the following 12 months. Over the same period, OpenAI's share fell by 1 percent, while the overall share of companies using AI products rose by 9 percent.

Ramp economist Ara Karajian (아라 카라지안) said, "Anthropic was already ahead in areas with high AI adoption rates such as finance, technology and professional services." He said, "In other areas OpenAI is still ahead, but the gap has been narrowing over the past few months."

He said Anthropic's strategy worked well, starting with a customer base centered on the technology sector, focusing on their needs and gradually expanding through tools such as Cowork.

On the OpenRouter leaderboard, a platform that lets users compare and use models from several AI companies including OpenAI, Anthropic and Google in one place, the last time OpenAI ranked higher than Anthropic was in December 2025. In a blog post, Karajian said, "It is uncertain whether Anthropic will continue to hold the No. 1 spot," but added, "The performance over the past year is evidence that Anthropic chose the right strategy."