Experiments ·

Claude Opus 5 beat every LLM by knowing when to stop stacking

A researcher benchmarked ten leading LLMs on the same physics task: build the tallest tower from 30 noisy blocks. Claude Opus 5 won by figuring out it could stop early to protect a tall tower, while GPT-5.6 Sol kept gambling and toppling.

The benchmark is open-source with replays and full results, so the behavior is reproducible rather than a single headline.

Made by u/EricBuildsMathModels. This write-up follows the original post; it is not an independent product test.

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