GPT-6 Astra beats Nethack on third try, sparking training-data transparency concerns

PMinervini · x · 2026-09-27

Ethan Mollick calls GPT-6 Astra beating Nethack on its third attempt a "startling achievement" — Nethack is the original roguelike and one of the hardest games ever; Mollick himself has never ascended.

Researcher pfau raises the key concern: nobody knows whether GPT-6 was specifically post-trained on Nethack. With zero transparency into training data and environments, the significance of such results cannot be independently evaluated.

Original post →

GPT-6 Astra beats Nethack on third try, sparking training-data transparency concerns

More from Models