Anthropic Unseats OpenAI in the Enterprise as AI Model Spending Spikes

Why It Matters

The overtaking of OpenAI by Anthropic highlights a rapid re‑distribution of enterprise AI spend, reshaping vendor dynamics and influencing future investment priorities across the sector.

Key Takeaways

• Anthropic's Claude used by >33% of Ramp's enterprise customers in April
• Anthropic's user base grew fourfold in the past year
• AI model spending projected to reach $33 billion in 2024
• Gartner forecasts total AI market hitting $2.59 trillion this year
• OpenAI's share fell to 32%, losing ground to Anthropic

Pulse Analysis

Ramp’s data provides a rare, granular view of how enterprises are allocating AI budgets. By tracking actual payments, the platform revealed that Claude’s adoption surged to over one‑third of its business users in April, a milestone that eclipsed OpenAI’s long‑standing dominance. This rapid shift underscores the willingness of large firms to experiment with newer LLM providers when pricing, integration ease, or partner ecosystems appear more favorable. For vendors, the metric serves as a leading indicator of where future contracts and development resources may flow.

Gartner’s latest forecast paints a broader picture of the AI economy’s expansion. Total AI spending is set to reach $2.59 trillion in 2024, driven largely by hardware and infrastructure investments that approach $1.5 trillion. Yet the model‑specific segment, though smaller, is expected to more than double to roughly $33 billion as companies embed generative and agentic capabilities into existing software stacks. The surge is partly attributed to higher pricing from model providers, reflecting the escalating costs of training ever‑larger models and the growing demand for specialized, domain‑specific solutions.

Both Anthropic and OpenAI are doubling down on enterprise enablement to lock in market share. Anthropic’s March partner program, the Claude for Small Business suite, and recent alliances with KPMG and PwC illustrate a concerted effort to embed its models within professional services workflows. OpenAI, meanwhile, has launched a consulting arm and deepened its stake in IT services. Analysts warn that despite the booming spend, the market will likely consolidate around a few dominant players as the economics of scaling LLMs become increasingly unforgiving. Companies that can balance innovation with cost efficiency will emerge as the long‑term winners.