Anthropic Surpasses OpenAI in Business Customers for the First Time
For the first time, Anthropic has overtaken OpenAI as the AI provider with the highest share of verified business customers. According to the latest AI Index published by fintech firm Ramp — compiled from real expense data across its client base — 34.4% of participating businesses are now paying for Anthropic services, compared to 32.3% for OpenAI. This marks the first time Anthropic has held the top position in this ranking.
The Details: What the Data Shows
The Ramp AI Index draws on expense and payment data from more than 50,000 companies, giving it both scale and diversity. While it exclusively reflects businesses that use the Ramp platform and therefore cannot be considered a perfect proxy for the broader market, the dataset is substantial enough to carry significant analytical weight.
The findings align with observations from other sources as well. On OpenRouter's leaderboard — which samples a different segment of users — OpenAI last ranked above Anthropic in December 2025, suggesting the trend is not isolated to Ramp's client base.
Looking back over the past 12 months, the shift has been particularly dramatic for Anthropic:
- In May 2025, only 9% of businesses in the Ramp dataset were paying for Anthropic products.
- That figure climbed by 26 percentage points over the following 12 months.
- Over the same period, OpenAI's share declined by 1%.
- The overall share of businesses using some form of AI product increased by 9%.
Ramp economist Ara Kharazian noted that Anthropic had already been leading among high-adoption segments such as finance, technology, and professional services. OpenAI retains an advantage in other business categories, but that gap has been narrowing over recent months.
The Strategy Behind Anthropic's Rise
Kharazian attributed Anthropic's growth to a deliberate go-to-market approach: starting with a highly technical customer base, focusing closely on their specific needs, executing well, and then gradually expanding reach through tools such as Cowork. In his words, "What Anthropic did worked really well — which was start with a very technical customer base, focus on their needs, really succeed in execution and then start broadening out."
This strategy of winning credibility and traction in demanding, technically sophisticated verticals before moving into mainstream business applications is a recognizable pattern in enterprise software — and appears to have paid off for Anthropic in measurable terms.
That said, Kharazian expressed skepticism about whether Anthropic's current lead will prove durable long-term, a point he elaborated on in a separate blog post. The competitive dynamics in the AI provider market remain fluid, and OpenAI continues to hold a lead in broader business segments outside of finance, tech, and professional services.
Why This Matters for E-Commerce Operators and Shopware Merchants
For shop operators, e-commerce managers, and developers integrating AI tools into their workflows, this shift in the enterprise AI landscape has direct practical implications. The growing adoption of Anthropic's models — particularly Claude — among technically demanding businesses signals that these models are increasingly trusted in production environments where reliability, instruction-following, and safety matter.
Many AI-powered tools in the Shopware ecosystem, including plugins for content generation, product description automation, and customer communication, are built on top of large language model APIs. Understanding which providers are gaining enterprise credibility can inform decisions about which AI backends to integrate, test, or prioritize in your own stack.
The broader trend is also significant: the overall share of businesses using some form of AI product rose by 9% over the past year. AI adoption in business operations is not slowing down — it is accelerating across sectors.
Practical Considerations for AI Integration in Your Shop
- Evaluate model providers beyond OpenAI: With Anthropic's Claude gaining ground in enterprise settings, it is worth testing its performance for your specific use cases — whether that is product copy generation, SEO content, or customer service automation.
- Follow adoption signals from adjacent industries: Finance, tech, and professional services tend to be early adopters of AI tools. Their preferences often predict which models will become broadly available and well-supported in plugins and integrations over the next 12 to 18 months.
- Prioritize API-agnostic solutions where possible: The competitive dynamics between AI providers are still shifting. Tools and plugins that allow you to switch underlying models give you flexibility as the market evolves.
- Stay current with provider benchmarks: Data sources like the Ramp AI Index and OpenRouter's leaderboard provide useful, real-world usage signals that go beyond marketing claims.
Outlook: A More Competitive AI Provider Market
The data from Ramp underscores that the enterprise AI market is no longer a single-provider story. Anthropic's rise to the top position — however temporary it may prove — reflects a genuine diversification in how businesses are selecting and paying for AI capabilities. For the Shopware merchant community, this means more choice, more competition on quality and pricing, and ultimately more options for building effective AI-powered commerce experiences.
Whether Anthropic can maintain its lead remains an open question. What is clear is that the competitive landscape for AI providers is more dynamic than ever, and businesses that stay informed and test multiple solutions will be best positioned to benefit from that competition.