OpenAI Share Jumps From 20% to 50% vs Anthropic in Two Months, Per OpenRouter

CathieDWood · x · 2026-09-18

ARK's downing notes OpenAI dominates the Artificial Analysis Intelligence Index Pareto frontier with 11 of 15 positions thanks to Astra and 5.6 Luna. Cited data from Gavin Baker shows OpenAI's share vs Anthropic on OpenRouter jumped from 20% to 50% since June, while Anthropic fell from 80% to 50%.

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