Anthropic leads enterprise adoption 34.4%

Anthropic moved ahead of OpenAI in Ramp’s latest measure of paid business AI adoption, according to data the corporate card and spend-management company published on May 13. Ramp said 34.4% of businesses in its AI Index were paying for Anthropic in April, compared with 32.3% paying for OpenAI. On the same day, Anthropic announced Claude for Small Business, a package of integrations that connects its assistant to tools including Intuit QuickBooks and PayPal. The two updates landed as AI vendors push beyond model releases and into recurring software budgets inside companies. Ramp’s figures do not measure overall market share across all businesses. The index tracks adoption among U.S. businesses in Ramp’s card and bill-pay data, and Ramp says the metric is based on identified transactions for AI products and services. Anthropic’s gain follows several months of increases in the same series, while OpenAI’s share in the index has narrowed from earlier highs. ### What exactly did Ramp say changed this month? Ramp said on May 13 that Anthropic “passed OpenAI in business adoption” for the first time in the latest release of its AI Index. In the report, lead economist Ara Kharazian wrote that Anthropic adoption rose 3.8% in April to 34.4% of businesses, while OpenAI adoption fell 2.9% to 32.3%. The April update followed a March reading in which Ramp said Anthropic had reached 30.6% and OpenAI remained ahead. In February, Ramp had put Anthropic at 19.5%. The sequence shows Anthropic closing the gap quickly inside Ramp’s sample over the first four months of 2026. ### What does the Ramp index actually measure? Ramp says the AI Index is a monthly measure of AI adoption among American businesses using its platform. The company says it identifies merchants tied to AI products and services from card and accounts-payable transactions, then estimates the share of businesses paying those vendors. The methodology matters because the index captures paid adoption in Ramp’s observed customer base, not total usage across the broader economy. TechCrunch, citing Ramp’s expense-data survey, reported that the figures reflect paying businesses rather than free users or traffic. ### Which products are helping Anthropic gain ground? Ramp linked Anthropic’s rise in part to coding tools, including Claude Code. Kharazian wrote in the May 13 report that Anthropic had benefited from demand tied to software-development use cases as business AI spending broadened. Anthropic has also been adding industry and workflow products. In July 2025, the company introduced Claude for Financial Services, and in recent weeks it expanded finance-focused agents and Microsoft 365 integrations, according to company announcements. ### What is Claude for Small Business? Anthropic said on May 13 that Claude for Small Business lets customers install connectors into software they already use, including Intuit QuickBooks, PayPal, HubSpot, Canva, Docusign, Google Workspace and Microsoft 365. The company said the product can help with payroll planning, month-end close, sales campaigns and invoice follow-up. The announcement described the product as a toggle-based install built on Claude Cowork, a version of Claude Anthropic introduced earlier for multi-step work across applications. TechCrunch reported that Anthropic is targeting smaller firms as it expands beyond large enterprise accounts. ### Why are QuickBooks and PayPal part of this launch? QuickBooks and PayPal are central systems for many small companies’ bookkeeping, payments and cash-flow management. Anthropic said connecting Claude to those tools would let users pull context directly from business software instead of copying information between apps. PayPal already appears elsewhere in Anthropic’s enterprise push. Anthropic’s website lists a webinar on deploying Claude Cowork across the enterprise with PayPal, indicating the payments company is also involved in broader workplace rollouts. ### What comes next? May 2026 is the immediate next milestone. Anthropic said Claude for Small Business is launching this month, with integrations including QuickBooks and PayPal named in the rollout materials, while Ramp said its AI Index will continue publishing monthly updates on paid business adoption.