Ethan Mollick says 19 smartphone-capable AI models now beat GPT-4

Ethan Mollick, a Wharton professor who writes about AI, says 19 AI models that run on a modern smartphone now outperform GPT-4, which he describes as the best model in the world for a full year.

He wrote this on X on October 12, 2026. He says many people wondered whether OpenAI had a secret advantage. The post does not name the 19 models or the benchmarks used to compare them, and no other reports on the claim were available.