As both OpenAI and Anthropic prepare to approach their initial public offerings (IPOs), insights into their business performance are currently reliant on external analyses. A recent report from Ramp, a company specializing in corporate credit card and expense management solutions, reveals that OpenAI is beginning to close the gap with Anthropic in the U.S. market.
Previously, OpenAI had a strong lead in the market for both businesses and consumers; however, that changed in May when Anthropic captured 41% of market share as compared to OpenAI’s 39%. Since then, Anthropic has maintained its advantage, boasting nearly 44% market share to OpenAI’s close to 40% as of July.
This data is drawn from over 70,000 U.S. businesses that utilize Ramp’s billing and corporate credit card services. While the clients span various industries, a notable portion are from the tech sector, given Ramp’s popularity in Silicon Valley.
A deeper analysis from Ramp economist Ara Kharazian indicates that OpenAI is currently experiencing faster growth in the third quarter than Anthropic, although the quarter has a month left—a significant time in the rapidly evolving AI sector. However, Ramp has abstained from providing specific financial figures, opting instead to focus on percentages.
It’s important to note that this data doesn’t reflect the entire market, as it excludes large enterprises that engage different providers for expenditure management, such as American Express. Nevertheless, it highlights important trends, suggesting that Anthropic’s position is not secure indefinitely. Businesses appear willing to shift loyalties as each organization unveils new AI models, indicating a level of volatility that should give investors on both sides reason to reconsider the stability of enterprise AI expenditures.
Kharazian commented on OpenAI’s growth by noting, “GPT-5.6 Sol is gaining traction and becoming a preferred option for developers.” In contrast, he remarked that Anthropic’s higher-end model, Fable 5, has struggled with both adoption rates and practical utilization due to stringent pricing and data retention regulations.
Despite the competitive tensions, Ramp’s findings suggest that both companies are likely to see revenue growth as the overall AI market expands. The proportion of businesses willing to invest in AI solutions among Ramp’s clientele has shown a consistent upward trend, surpassing 50% in March and nearing 56% by July.
