Claude overtakes OpenAI in U.S. B2B adoption
A year ago the enterprise default was ChatGPT. The Ramp index measures actual recurring payments by business customers, so it reflects real adoption.
Ramp AI Index: Anthropic surpasses OpenAI in U.S. B2B adoption for the first time (34.4% vs 32.3%), quadrupling in 12 months
Vendor comparisons can no longer skip Claude. The shift reflects Claude's base broadening, not OpenAI declining; for individuals ChatGPT still dominates.