GPT-6 Astra beat Portal start to finish without human help in under 24 hours

AITopTools Editorial TeamSeptember 7, 2026

What changed

GPT-6 Astra completed the puzzle game Portal from start to finish in about 24 hours without human help after receiving an initial goal. Its developer, cozyblaze, published the code and documentation on GitHub.

What this means for you

This is a public demonstration of an AI system carrying out a long, multi-step task with little supervision. The code and documentation are available for others to examine, though the feed does not say that the model itself is publicly available.

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