OpenAI Closes Gap on Anthropic in Corporate Spending Race

While Anthropic surged past OpenAI in May—capturing 41% of the market compared to OpenAI’s 39%—the gap has narrowed as OpenAI aggressively claws back ground. Ramp economist Ara Kharazian notes that OpenAI’s momentum in the current quarter signals that the competitive advantage in the enterprise sector is far from settled. The data, derived from billions in transactions across Ramp’s corporate credit card and expense management platform, highlights a broader trend: businesses are increasingly willing to switch providers as new models hit the market.

This fluidity poses a challenge for long-term revenue projections. Anthropic’s high-end model, Fable, has faced friction due to price points and a controversial 30-day data retention policy. Conversely, OpenAI’s latest offerings are gaining traction among developers who prioritize performance over the specialized, albeit restrictive, use cases favored by Anthropic. Despite the intense rivalry, the total addressable market is expanding rapidly, with the percentage of companies paying for AI services rising from 50% in March to nearly 56% by July.