Ramp’s July AI Index says Anthropic’s market share reached 43.5%, widening its lead over OpenAI, according to Techmeme’s summary of a post by Ramp’s Ara Kharazian. The same summary says Fable 5 accounted for only 6% of the tokens businesses bought. Kharazian/Ramp attributed that relatively low share as likely due to high cost. The cluster does not include Ramp’s full methodology, the underlying sample size, or a second source confirming the figures. That means the numbers should be read as Ramp’s view into business AI buying patterns, not a settled market-wide ranking. Still, the reported direction is notable: in Ramp’s index, Anthropic is not merely competitive with OpenAI but extending a lead. For buyers and model providers, the more important question is whether this reflects durable enterprise preference, pricing differences, procurement timing, or Ramp-specific customer behavior. Who benefits: Anthropic benefits if Ramp’s index reflects broader business adoption. Buyers also get another benchmark for how enterprise AI usage may be shifting across providers. Who's exposed: OpenAI is the named incumbent losing relative ground in this index. Fable 5 is also named in the index, with its 6% token share attributed by Ramp as likely due to high cost.