Anthropic overtakes OpenAI in enterprise AI adoption, Ramp Index shows

Anthropic has overtaken OpenAI in enterprise AI adoption, according to Ramp's March 2026 AI Index. The financial data platform reported that Anthropic's enterprise adoption rate surged to 24.4% (up 4.9 points, its largest single-quarter jump ever), compared to OpenAI's 1.5-point decline. Among first-time AI purchases, Anthropic now commands roughly 70% share, reversing OpenAI's dominance as recently as 2025. Ramp economist Ara Kharazian notes that Anthropic’s engineering-focused agent Claude Code is driving adoption as companies choose its models for internal engineering and business tasks.

Why this matters: This marks a dramatic reversal in the enterprise AI narrative. As recently as 2025, OpenAI held a commanding lead in first-time AI procurement; within just one year, Anthropic has captured roughly 70% of new enterprise AI purchases. This shift validates the recurring pattern where specialized, developer-centric offerings can overtake incumbent general-purpose platforms, especially when enterprise buyers prioritize code-focused and engineering agent capabilities. It also updates the competitive landscape of foundation model companies, suggesting that model differentiation and use-case alignment can overcome brand inertia.

Expert take: The data signals that enterprise AI procurement is maturing beyond the "ChatGPT-for-everything" phase. Anthropic's Claude Code and Claude agent family have become the default for organizations seeking AI to handle actual engineering and business workflow tasks, rather than just chat. This is consistent with the broader industry pattern of AI adoption moving from general-purpose chat to more vertically integrated, role-specific AI agents. If this trend holds, it could redefine which foundation models dominate enterprise revenue streams.