Anthropic gains ground on OpenAI
Business-data trackers show Anthropic's adoption among paying businesses has surged, with one index suggesting Anthropic could soon pass OpenAI on a measure of enterprise AI spending as its share rose sharply over the past year. Multiple outlets noted that Anthropic's momentum reflects faster business uptake on certain platforms, shifting some enterprise AI spend dynamics. (businessinsider.com)
Anthropic is closing in on OpenAI in one closely watched measure of business artificial intelligence spending. (ramp.com) Ramp said on April 11 that 50.4% of businesses on its card-and-bill-pay platform paid for artificial intelligence products in March, up from 35% a year earlier. In that update, Ramp said Anthropic’s adoption rate was “on track to catch up” to OpenAI soon. (ramp.com) On Ramp’s vendor page, Anthropic ranked No. 2 in generative artificial intelligence in April 2026, and 63% of organizations with a vendor in that category used Anthropic. Ramp said that was up 39 percentage points from a year earlier. (ramp.com) OpenAI still has a larger installed base in Ramp’s business-spend data, but its lead has narrowed over the past several months. In February, Ramp said paid adoption was being led by spending on OpenAI and Anthropic; by April, it said Anthropic was nearing the top spot. (ramp.com, ramp.com) The shift tracks a broader enterprise contest over which model providers companies choose for coding, customer support, research, and internal tools. Ramp measures who businesses are paying, not which chatbot gets the most consumer traffic. (ramp.com, openai.com) Anthropic has spent the past year building more business-specific products around Claude, including Claude Code for Enterprise and office-product integrations listed on its site. In March, it also said it would invest $100 million in a Claude Partner Network aimed at helping companies deploy Claude. (anthropic.com, anthropic.com) Anthropic has also pushed its case on model capability. In February, it said Claude Opus 4.6 improved coding, tool use, and long-context work, and made the model available to Team and Enterprise customers. (anthropic.com, anthropic.com) OpenAI has argued that enterprise adoption is still accelerating on its own platform. In a report published in December 2025, the company said it was seeing deeper workplace integration and productivity gains across its enterprise customers. (openai.com) Other trackers have also shown Anthropic gaining with workplace buyers. Menlo Ventures said in July 2025 that Anthropic held 32% of enterprise large language model market share by usage, ahead of OpenAI in its survey-based measure. (techcrunch.com) The next few monthly reads will show whether Ramp’s April signal turns into a lead change. For now, the clearest update is that Anthropic has moved from a distant second to OpenAI’s closest business rival in paid enterprise artificial intelligence adoption. (ramp.com, ramp.com)
