Market-share — AI news & analysis

Anthropic crosses OpenAI in U.S. business AI adoption — first time in the Ramp Index

Ramp's May 13, 2026 AI Index put Anthropic at 34.4% of U.S. business AI usage versus OpenAI at 32.3% — the first time Anthropic has overtaken OpenAI in the index since it began tracking in 2023. Anthropic also disclosed a $30B run-rate revenue (up from ~$9B at end of 2025) and shipped Claude for Small Business this month. Here's what changed, and what the gap looks like.