New transaction data from Ramp points to a widening gap in the enterprise AI market. OpenAI appears to be capturing business spending faster than its rivals, with U.S. companies increasingly paying for its AI models, platforms, and tools.
Ramp’s data shows OpenAI pulling ahead
According to Ramp’s AI Index, 32.4% of U.S. businesses were paying for subscriptions to OpenAI products as of April. That was a notable increase from 18.9% in January and 28% in March.
The index is based on Ramp’s card and bill pay data. It estimates how quickly businesses are adopting AI products by looking at paid subscriptions across the companies represented on Ramp’s platform.
On that measure, OpenAI is moving faster than the other AI companies named in the data. The result is a picture of enterprise adoption that appears to be concentrating around one provider, at least among the businesses visible to Ramp.
Rivals are growing, but not at the same pace
Anthropic also gained ground in Ramp’s data, but from a smaller base. As of last month, 8% of businesses had subscriptions to Anthropic’s products, compared with 4.6% in January.
Google AI moved in the opposite direction in the same dataset. Its subscriptions declined from 2.3% in February to 0.1% in April.
Those figures do not describe the entire AI market. They do, however, show how paid business subscriptions are appearing inside one large fintech platform’s transaction data. Within that view, OpenAI’s lead looks much larger than the gains reported for Anthropic and the decline reported for Google AI.
Why the index matters, and where it has limits
Ramp’s AI Index is useful because it is tied to actual business spending rather than surveys or stated intentions. A paid subscription is a stronger signal than interest alone, especially in a market where companies may test multiple AI tools before choosing which ones to keep.
Still, the source article makes clear that the index is not a complete measurement of enterprise AI adoption. It uses a sample of corporate spend data from around 30,000 companies. That means it reflects the activity Ramp can see, not every business in the market.
There is another important limitation. The index identifies AI products and services through merchant names and line-item details. Because of that, it may miss AI spending that is grouped into other cost centers.
Those caveats matter. A company could be using AI through a broader software contract, a cloud bill, or another category that does not appear as a clearly labeled AI subscription in the data. Even with that limitation, the direction of the figures suggests OpenAI is strengthening its position among paid enterprise customers.
Enterprise AI is becoming central to OpenAI’s business
The Ramp data fits with other business signals described in the source article. In a report published in April, OpenAI said it had over 2 million business users. That was up from 1 million users as of September.
OpenAI expects enterprise revenue to contribute significantly to its bottom line. According to Bloomberg, the company is projecting $12.7 billion in revenue this year and $29.4 billion in 2026.
The company does not anticipate being cash-flow positive until 2029. Against that backdrop, enterprise customers are especially important because business AI products can support larger and more specialized revenue opportunities than ordinary subscriptions.
OpenAI is also considering plans to charge business customers thousands of dollars for specialized AI “agents.” Those agents would be designed to help with software engineering and research tasks.
What the trend suggests for business AI buyers
For enterprises, the Ramp figures point to a market that is still moving quickly. Many companies are already paying for AI tools, but the distribution of that spending is uneven. OpenAI’s adoption rate in the index rose month by month from January to March to April, while competitors showed a more mixed pattern.
That does not mean every business will choose the same provider. It does suggest that OpenAI has become a default option for many companies that are willing to pay for AI products today.
The broader implication is straightforward: enterprise AI adoption is no longer just about experimentation. The Ramp data tracks subscriptions, which means companies are moving money toward tools they expect employees to use. In that environment, the companies that gain early paid adoption may have an advantage as AI budgets become more formal and more closely tied to everyday work.
Based only on the figures in the source article, OpenAI is the company gaining the clearest momentum in that shift. Anthropic is also growing in Ramp’s data, while Google AI’s subscription presence declined over the period cited. The result is a competitive landscape where enterprise AI spending appears to be expanding, but not evenly shared.