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In Ermon's comparison, the diffusion model matched the autoregressive model's perplexity and data fit using the same number of parameters.
Stefano Ermon · Why Diffusion Will Win AI Inference with Inception Co-Founder and CEO Stefano Ermon · 18 Sept 2026
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“we were able to match the quality, like the same perplexity, and you were fitting the data just as well as an autoregressive model with the same number of parameters,”Play from 5:26Report a misattribution
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