Dev burns 1.6B tokens building a full playable game with GPT Astra in 4 days

bennash · x · 2026-09-13

Developer @builtbysketch spent 1.6 billion tokens using GPT Astra (referred to as GPT 5.6/6 Astra) to turn an initial demo into a full, playable game in 4 days, built with Blender plus the model. He published a long-form post-mortem covering the entire process and lessons learned, claiming the workflow generalizes to building almost any game end-to-end with an LLM.

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