Anthropic Leads U.S. Business AI Adoption at 43.5%, Ramp July Index Shows
Key Takeaways
- •Anthropic was used by 43.5% of American companies in Ramp’s July AI Index, making it the leading AI provider by business adoption.
- •OpenAI held a 39.7% share of business usage, while xAI’s utilization reached 4.0% in the same survey period.
- •At the model level, Anthropic’s Fable 5 represented 6% of tokens purchased and 11.4% of total AI spending.
- •OpenAI’s GPT-5.6 Sol accounted for 25% of tokens purchased and 23% of total AI expenditure.
- •Ramp bases its index on observed business payments and invoices, with data skewed toward its small and mid-sized U.S. customer base.
Anthropic has emerged as the most widely adopted AI provider among U.S. businesses, according to Ramp's July AI Index. The data indicates that 43.5% of American companies used Anthropic's AI solutions, representing a 1.1 percentage point increase from the prior month.
OpenAI ranked second with a 39.7% share, posting a modest gain of 0.23 percentage points. xAI, the AI venture founded by Elon Musk, saw its business utilization climb to 4.0%, an increase of 0.94 percentage points.
Despite Anthropic's leading position in overall business adoption, the spending pattern tells a different story at the model level. Anthropic's Fable 5 model accounted for only 6% of tokens purchased and 11.4% of total AI spend. In contrast, OpenAI's GPT-5.6 Sol commanded a substantially larger share, representing 25% of tokens purchased and 23% of total expenditure.
Ramp, which provides corporate cards and expense management services, tracks AI product adoption by monitoring business payments and invoices processed through its platform. Because the index is grounded in observed transaction data rather than self-reported surveys, it captures a concrete picture of where enterprise dollars are actually flowing — though Ramp's dataset skews toward its own customer base of primarily small and mid-sized U.S. businesses.
Anthropic, founded in 2021 and backed by strategic investments from both Amazon and Google, has positioned itself as an AI safety-focused company. Its Claude family of language models competes directly with OpenAI's GPT series in the enterprise market. Anthropic's adoption lead, despite lower per-model spending volumes, aligns with the company's strategy of offering Claude across multiple tiers and pricing levels, potentially enabling broader but lighter usage across organizations.
The divergence between Anthropic's broad customer base and its relatively smaller share of token-level spending suggests that businesses may be using Anthropic's services across a wider range of applications rather than concentrating heavy usage on a single model. Alternatively, it may reflect differences in customer segment or pricing architecture between the two providers. Market participants are monitoring these adoption trends as indicators of competitive positioning among the leading AI providers, with subsequent monthly Ramp indices expected to show whether Anthropic's adoption lead translates into deeper per-account spending over time.
