Fresh data from corporate spend management firm Ramp reveals a tight race between OpenAI and Anthropic for dominance in the U.S. business sector. Although Anthropic secured the lead in market share during the spring and summer months of 2026, recent indicators show that OpenAI is regaining momentum in the third quarter.
This ongoing volatility highlights that enterprise AI loyalty remains fragile, with companies frequently switching providers based on newly released models. Meanwhile, the broader market for artificial intelligence tools continues its steady upward trajectory among business users.
- Anthropic held nearly 44% market share compared to OpenAI’s roughly 40% in July.
- OpenAI is currently demonstrating faster growth in the ongoing quarter according to Ramp data.
- Enterprise customers frequently switch AI vendors depending on recent model releases.
- Over half of Ramp’s surveyed business clients now pay for AI software tools.
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