Machine Heart

Sep 14, 2026 · Artificial Intelligence

GPT-6 Astra Deep Dive: Looped Transformers, Computer Use & the Hidden Reasoning Debate

Sebastian Raschka analyzes GPT-6 Astra's breakthroughs in 3D rendering and computer use, explains looped transformer architectures from Universal Transformers to Mixture-of-Recursions, and argues that shorter reasoning traces stem from model capability gains, not recurrent depth obscuring chain-of-thought.