The enterprise shift OpenAI saw coming

· Source: The Rundown AI · Field: Technology & Digital — Artificial Intelligence & Machine Learning, Emerging Technologies & Innovation · Depth: Fundamental Awareness, medium

Summary

Anthropic has surpassed OpenAI in paid business AI adoption, according to Ramp's latest AI Index from May 2026. This marks the first time Anthropic has led, showing a 4x surge in usage since 2025, while OpenAI's adoption has leveled off. Ramp's data, which tracks corporate card and invoice payments from over 50,000 U.S. businesses, indicates Anthropic rose 3.8% in April to 34.4% of adoption, with OpenAI falling 2.9% to 32.3%. Claude Code significantly contributed to Anthropic's expansion into finance, legal, and research workflows. Despite this, Anthropic faces risks such as recent Claude outages and increasing costs compared to OpenAI and open-source alternatives. This shift likely influenced OpenAI's strategic pivot towards enterprise solutions, as evidenced by recent Codex initiatives.

Key takeaway

For CTOs and VPs of Engineering evaluating AI vendor partnerships, Anthropic's rise in enterprise adoption signals a competitive shift. You should assess Anthropic's Claude offerings, particularly for technical and specialized workflows, while also considering potential cost increases and service stability. Diversifying AI toolchains beyond a single vendor could mitigate risks and optimize for specific business needs, especially as the market matures.

Key insights

Anthropic has overtaken OpenAI in enterprise AI adoption, driven by a significant surge in business usage.

Principles

Method

Google Cloud's Gemini Enterprise Agent Platform offers an open-source Agent Development Kit (ADK) to build, govern, and optimize multi-agent AI systems, orchestrating specialized agents into self-correcting workflows.

In practice

Topics

Best for: CTO, VP of Engineering/Data, Investor, Director of AI/ML, AI Product Manager, General Interest

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Editorial summary, takeaway, and curation by AIssential. Original article published by The Rundown AI.