GPT-6 Astra on robot arms

OpenAI's GPT-6 Astra demonstrated significant improvements in robotic manipulation tasks when controlling robot arms, achieving a 95% success rate on a block-placement task compared to Claude Fable 5.1's 40%, while costing approximately half as much per run. However, both models struggled equally with a more complex puzzle-insertion task, each completing it only twice out of 20 attempts, suggesting limitations in fine-motor control for intricate positioning.