Laya: a 421M open-source model answers with probabilities in one 40ms forward pass

maier_ak · x · 2026-09-28

A solo developer released Laya, a 421M-parameter open-source model (Apache 2.0) that revives the discriminative paradigm: it takes text plus typed questions and returns answers with probabilities in a single forward pass — about 40ms on one T4 — generating no text at all. The author accompanies it with a blog post, 'Laya, Jev and the Return of the Discriminative Model.'

Related event: Open-Source 421M Discriminative Model Laya Goes Viral: 7x Faster but Falters on Complex Tasks(5 posts)→

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