Developer Demo Shows GPT-6 Astra Running Doom at 20-Plus FPS on a Custom CPU, Versus About 1 FPS on GPT-5.6 Sol

A developer demonstration of OpenAI’s GPT-6 Astra is running the 1993 shooter Doom at more than 20 frames per second on a custom CPU built from simulated logic — a roughly twentyfold jump from about 1 FPS when GPT-5.6 Sol first passed the same test in August. The result is not an official launch metric. It is a systems demo: an agent designing a virtual processor, compiling a vintage engine onto it, and making the game move at a rate other developers now describe as playable.