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Anthropic now more popular than OpenAI among enterprise customers
The data comes from Ramp's AI Index

Anthropic now more popular than OpenAI among enterprise customers

May 14, 2026
12:53 pm

What's the story

In a major shift in the artificial intelligence (AI) landscape, Anthropic has overtaken OpenAI as the most popular choice among businesses. The latest data from Ramp's AI Index reveals that 34.4% of enterprises have adopted Anthropic's services, surpassing OpenAI's 32.3%. This is the first time that Anthropic has taken the lead over its rival in this sector.

Spending analysis

AI index is based on Ramp's expense data

The AI Index, which is based on expense data from Ramp's clients, shows that a plurality of the participating businesses are paying for Anthropic services. The index tracks billions of dollars spent on AI services each month by analyzing corporate card and bill-paying activity from over 50,000 US businesses. While it doesn't capture all corporate spending on AI, it's a widely accepted method to monitor trends in this crucial sector.

Market shift

Rapid growth in enterprise adoption

The past year has been a period of rapid growth for Anthropic, especially among corporate customers. The AI firm's services have seen a huge spike in adoption, particularly as several companies embraced Claude Code for software development. This growth is part of Anthropic's strategy to expand its footprint into other enterprise workflows such as legal operations, finance, and research.

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Market volatility

Challenges ahead for AI models

Despite Anthropic's lead, the victory could be short-lived. Ramp economist Ara Kharazian has warned that the AI competition is still highly volatile, with businesses switching models quickly based on cost, performance, and reliability. He said rising token costs, compute shortages, and interest in cheaper open-source alternatives could reshape the market again within months.

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Strategic approach

Focus on technical customer base pays off for Anthropic

Kharazian noted that Anthropic's success can be attributed to its strategic approach of starting with a technical customer base and focusing on their needs. He said, "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 through tools like Cowork."

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