Ramp card data puts Astra at 13% of enterprise AI spend against Fable's 8%.

Ara Kharazian, who runs the Ramp AI Index, posted September 16 that OpenAI's growth is coming from shifts off GPT-5.6 Sol, off some Anthropic models, and from net-new usage, reading it as Anthropic's pace-the-frontier position costing it frontier adoption. That cuts against the September 9 index, which had Anthropic ahead on breadth at 43.8% of US businesses paying for it against OpenAI's 39.8%. Two different questions, how many companies buy you and how much of the frontier budget you get, now pointing opposite ways. Neither is wrong.