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Enterprise Penetration: Anthropic vs OpenAI
Enterprise Penetration: Anthropic vs OpenAI#
Anthropic climbed from 1.5% in early 2024 to overtake OpenAI in May 2026, while OpenAI has stalled around 40%.Draft, pending review
How to read this chart
Share of companies with a paid transaction with each vendor in a given month, from January 2023. Anthropic climbed from 1.5% in February 2024; OpenAI has held at 39% to 41% since September 2025.
Source: Ramp AI Index (public data); FinSight compilation · Updated 2026-09-04
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