Anthropic now has more business customers than OpenAI, according to Ramp data
Anthropic just flipped the script. More verified business customers than OpenAI — for the first time.

Why it matters
Market share is shifting. Anthropic's enterprise adoption is outpacing OpenAI's, signaling a structural change in AI vendor preferences that directly impacts valuation, competitive positioning, and investment thesis.
The key facts
4 to knowAnthropic has more verified business customers than OpenAI (first time)
Data source: Ramp AI Index (May 2026)
Enterprise adoption metric — tracked via business spending/usage patterns
Suggests shift in enterprise vendor preference away from OpenAI
Go to the source
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Publisher excerpt: For the first time, Anthropic has more verified business customers than OpenAI, according to this month’s AI Index from the fintech firm Ramp.