Industry Newsllmenterpriseanthropicmarket share
Anthropic Gains Market Share Over OpenAI
8.2
Ramp's March 2026 AI Index shows Anthropic's Claude wins about 70% of head-to-head new-business matchups with OpenAI, based on corporate credit-card spending across 50,000 businesses. Adoption of Anthropic rose from one in 25 businesses a year earlier to nearly one in four, while OpenAI saw its largest single-month adoption drop (1.5%), highlighting diverging ecosystems and new Claude features.
Key Points
- 1Reports show Claude wins about 70% of head-to-head new-business matchups against OpenAI.
- 2Shift reflects identity-driven adoption, safety positioning, and targeted professional integrations at Anthropic.
- 3Practitioners face higher switching costs as specialized ecosystems and workflow training lock in vendors.
Scoring Rationale
Strong market-shift evidence from corporate spending data supports relevance, limited by single-source reporting and not peer-reviewed.
Sources
Public references used for this report.
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