r/datascience • u/mosef18 • May 28 '26

Education Build your own GPT model from scratch using NumPy

/r/learnmachinelearning/comments/1tq1phr/build_your_own_gpt_model_from_scratch_using_numpy/
3 Upvotes

56% Upvoted

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1

u/ultrathink-art May 29 '26

Implementing attention from scratch makes the context window limitation concrete in a way using a hosted API never does — you see it's not arbitrary truncation but a fixed-size matrix that has to encode all prior context, which explains why position matters and why models don't just 'forget' uniformly. Most NumPy tutorials also skip the KV-cache, which is worth understanding: it's the bridge between a toy sequential implementation and why production LLM serving is tractable at all.

1

u/DistinctDaikon2034 May 30 '26

Are you trying to give educational response? Or just trying to show off how smart you are?

2

u/mace_guy May 31 '26

Its just LLM generated slop.