Ara Kharazian / Ramp: Ramp's July AI index: Anthropic's market share hit 43.5%, widening its lead over OpenAI; Fable 5 is only 6% of tokens businesses bought, likely due to high cost — Dear Colleagues: Today's letter includes my monthly update of Ramp AI Index, our flagship research using spend data from Ramp to track how American businesses are using AI.