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Solving Rubix with text based reasoning models

This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.

A few months ago, CubeBench reported something pretty striking: leading LLMs achieved a 0.00% pass rate on its long-horizon Rubik’s Cube tasks . The paper used the cube as a test of exactly the things language models were thought to struggle with most: spatial reasoning, long-horizon state tracking…

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  1. 2026-09-12 15:53 · r/OpenAI
    Solving Rubix with text based reasoning models

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