Anthropic leads business share 34.4%

Ramp said on May 13 that Anthropic had passed OpenAI in paid business adoption for the first time in the company’s monthly AI Index, a spending-based measure built from client expense data. The index showed 34.4% of participating businesses paying for Anthropic services in April, compared with 32.3% for OpenAI, according to a post by Ramp economist Ara Kharazian and a TechCrunch report citing the data. (ramp.com) The 34.4% figure matters mainly because Ramp’s measure tracks actual payments rather than survey responses about intent or brand awareness. (ramp.com) TechCrunch reported that the index is compiled from Ramp clients’ expense data and covers more than 50,000 companies, while also noting that the sample reflects businesses using Ramp rather than the whole market. May 2025 provides the clearest comparison point in Ramp’s series. (ramp.com) TechCrunch reported that only 9% of businesses in Ramp’s sample were paying for Anthropic products a year earlier, and that Anthropic’s share climbed 26 percentage points over the following 12 months. Over the same period, TechCrunch said, OpenAI’s share declined by 1%, while the share of businesses using some kind of AI product increased by 9%. (techcrunch.com) Ara Kharazian told TechCrunch that Anthropic had already been leading among “high adoption groups like finance, tech, professional services,” and that OpenAI’s remaining lead in other firms had been narrowing in recent months. He said Anthropic’s gains reflected a strategy of starting with technical customers, meeting their needs, and then broadening its reach through products including Cowork. (techcrunch.com) Ramp’s own write-up was more cautious about how far to take the result. Kharazian wrote that the figures should not be read as proof Anthropic is the definitive leader in business adoption, and he listed headwinds that could affect the company’s standing, including customer sensitivity to cost, recent product complaints and competition from lower-cost inference platforms and open-source models. Ramp also said overall AI adoption across businesses in its index rose 0.2 percentage points to 50.6% in April. (techcrunch.com) December 2025 is another date Ramp and TechCrunch used to place the result in context. TechCrunch reported that OpenRouter’s leaderboard, which samples a different user base, last ranked OpenAI above Anthropic in December 2025, suggesting the shift was not limited to Ramp’s customer base alone. That comparison is not the same as Ramp’s spending index, but TechCrunch cited it as a separate industry signal moving in the same direction. (ramp.com) May 13 is also the date both the Ramp post and TechCrunch article were published, making this a fresh data point rather than a retrospective claim. The next test for both companies will be the next monthly Ramp AI Index release, which will show whether Anthropic’s April lead persists and whether OpenAI regains share among businesses paying through Ramp’s platform. (ramp.com) (techcrunch.com)