[RAMP]score: 0.29
Anthropic overtakes OpenAI in US business AI adoption
May 14, 2026
Ramp's May AI Index shows Anthropic surpassing OpenAI in US business adoption at 34.4% vs 32.3% market share, driven by Claude Code in finance and tech sectors. Anthropic quadrupled share year-over-year while OpenAI grew just 0.3%. This marks a meaningful competitive inflection point in enterprise AI tooling.