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Your Six AI Models Are Really Two: The Math of Correlated Mistakes

A Towards Data Science analysis argues that ensembles of multiple AI models provide fewer independent opinions than their count suggests because the models make correlated mistakes, and the author tested a formula for estimating effective model diversity on six open models across 1,500 exam questions. The piece reports that voting across several models yields an effective number of independent opinions well below the number of models queried.

read1 min views3 publishedOct 23, 2026
Your Six AI Models Are Really Two: The Math of Correlated Mistakes
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Ask several models the same question, take a vote, and you get fewer independent opinions than you paid for. One formula says how many, and I checked it on six open models and 1,500 exam questions. The post Your Six AI Models Are Really Two: The Math of Correlated Mistakes appeared first on Towards

Data Science.

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  • •Latest on Your Six AI Models Are Really Two: The Math of Correlated Mistakes — reported by Towards Data Science for the newsletter space.
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  • •AI advancements continue to reshape industries — read the full article on Towards Data Science for complete coverage.

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