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In Ramp’s latest monthly AI Index reading, OpenAI dipped 0.1 percentage points to 39.5% of U.S. businesses with paid AI …

Rohan Paul Twitter · Rohan Paul (@rohanpaul_ai) · 2026-06-30

Ramp's June 2026 AI Index shows Anthropic surpassing OpenAI in US enterprise paid-subscription share, with Anthropic at 41% versus OpenAI at 39.5%.

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Extraction

Topics: ai-market-shareenterprise-aianthropicopenai

Claims

  • Anthropic rose 2.5 percentage points to 41% share of US businesses with paid AI subscriptions as of June 2026.
  • OpenAI fell 0.1 percentage points to 39.5% in the same period, dropping below Anthropic for the first time in this index.
  • Ramp's AI Index tracks monthly AI spending share across US businesses via card transaction data.

Key quotes

In Ramp's latest monthly AI Index reading, OpenAI dipped 0.1 percentage points to 39.5% of U.S. businesses with paid AI subscriptions, while Anthropic rose 2.5 points to 41%.