A deep dive into decision models: explaining how Perplexity's Jev Decider works
antoine_chaffin · x · 2026-10-31
Isaac Flath published what's being called the best explainer on decision models. Since Perplexity's Jev launch, general-purpose classification has had a moment, arXiv has seen an explosion of 'Jevology' papers, and OpenAI quickly released its own. Using illustrated Excalidraw figures, the article explains how Perplexity's Decider works and offers practical considerations on when and how to use decision models.
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