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Lilian Weng's Overview of Scaling Laws and Compute-Optimal Allocation

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Lilian Weng published a long blog post on scaling laws, which help estimate the best split of compute between data and model size before a large training run. The post covers what scaling laws predict, how compute-optimal allocation works, and why Kaplan et al. and Chinchilla reach different conclusions. It also addresses how data limits and fitting details make extrapolation difficult.

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@lilianweng

A super long overdue (3+ years?) post on scaling laws.

Compute is expensive. Scaling laws are a way to help us reason about the optimal compute allocation between data and model size before committing to a large run.

The post covers what scaling laws predict, how compute-optimal allocation works, why Kaplan et al. and Chinchilla disagree, and how data limits + fitting details make extrapolation tricky.

https://lilianweng.github.io/posts/2026-06-24-scaling-laws/

Source: Lilian Weng · x.comPublished · added here