ChainCatcher report: On September 9, Ara Kharazian, Chief Economist at Ramp, a corporate spending management platform, released the Ramp AI Index for September 2026. The index tracks U.S. corporate AI adoption based on Ramp’s spending data. In August, Anthropic accounted for 43.8% of U.S. enterprises paying for subscriptions or tokens, an increase of 0.34 percentage points month-over-month; OpenAI held 39.8%, up 0.09 percentage points month-over-month. Overall new AI adoption continues to grow, but at a slowing pace, with technology sectors such as information, finance, and professional services leading. The median monthly AI spend per employee among the top 1% of companies decreased by 9.7%, falling from $7,976 to $7,205. The effective price per million tokens dropped 41% from its March 2026 peak of $1.15 to $0.68. Lower-cost standard models are driving usage, while frontier models (Opus, Fable, Sol) account for 45% of token share. Adoption of open-source models remains limited, representing 6.4% of AI-spending companies and 3.6% of all companies.
Anthropic held 43.8% of the U.S. enterprise AI paid market share in August.
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Summary
According to the Ramp AI Index for September 2026, Anthropic holds 43.8% of the U.S. enterprise AI paid market, up 0.34 percentage points from July. OpenAI follows with 39.8%, up slightly by 0.09. Adoption growth has slowed, but the top sectors remain information, finance, and professional services. The median AI spending per employee in the top 1% of firms dropped 9.7% to $7,205. Effective token prices fell 41% to $0.68, driving increased usage of cheaper models. High-end models like Opus and Fable now account for 45% of token usage. Altcoins to watch show varied performance amid shifting dynamics. The Fear and Greed Index remains neutral, indicating cautious market sentiment. Open-source models are still underutilized, with only 6.4% of AI-spending firms adopting them.
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