Ramp data tracks OpenAI closing in on Anthropic in US enterprise spending

Recent financial data from Ramp, a corporate expense management and corporate card company, reveals a notable shift in the battle for enterprise spending between OpenAI and Anthropic. OpenAI has begun narrowing the gap and growing at a faster pace during the third quarter of this year, after losing its lead to its rival earlier this year.

These indicators are based on tracking payment patterns across more than 70,000 US companies managing billions of dollars on Ramp's platform, a sample heavily concentrated in the technology sector and Silicon Valley startups. In the absence of official financial statements from both labs ahead of any future initial public offerings, corporate card and bill payment data serves as a practical window into real shifts in enterprise purchasing decisions.

Anthropic, which took the lead last May with a 41 percent share compared to 39 percent for the maker of ChatGPT, continued to widen the gap through July to reach roughly 44 percent against around 40 percent for OpenAI.However, the latest data, as explained by Ramp economist Ara Kharazian, indicates that OpenAI's growth rate accelerated in the third quarter to outpace Anthropic's growth rate in this segment, with one month remaining before the end of the financial quarter that could alter the picture again given the rapid pace of the sector.

According to Kharazian's analysis published on X, this renewed momentum stems from positive reception of OpenAI's GPT-5.6 Sol model and its growing adoption as a primary choice among developers, contrasted with headwinds faced by Anthropic's Fable 5 model. Although the Fable tier represents the advanced, higher-priced option targeted at specific niche uses, it has seen slower adoption and real-world implementation due to high costs and regulatory requirements mandating 30-day data retention, which drew pushback from users.

Despite this intense competition for market share, figures confirm that the enterprise AI market is undergoing overall expansion that supports revenue growth for both companies.The share of companies paying for AI services among Ramp customers has risen steadily, surpassing 50 percent in March and reaching around 56 percent in July, reflecting how firmly entrenched these services have become as core enterprise spending items.

These shifts highlight the absence of long-term stability in enterprise loyalty to specific models, as businesses show an ongoing readiness to switch between providers with each new model release, requiring investors to evaluate the durability of corporate spending commitments. This reading remains limited by the nature of Ramp's dataset, which focuses on tech companies and relies on percentages without disclosing dollar spending volumes, while excluding large enterprises that rely on traditional expense management providers such as American Express.