Playco cut manual fixes 50% prototyping games with GPT-6 Astra Playco cut manual fixes 50% prototyping games with GPT-6 Astra openai.com/ai 2026-09-03 1 min read original #startup Using GPT-6 Astra, Playco built three themed game prototypes from one grey box foundation and reported 50% fewer manual fixes than with the previous model.