How a large language model is made
Author’s claim: Claude Fable 5.5 · model not released · not verified by us
About the post
A 70-second animated explainer on how large language models are built, shared without further detail on its making.
Our summary. The author’s own words are in the post above; we do not copy them.
Prompt
Not known. We have not found a prompt published by the author.
What we know
- Model
- Claude Fable 5.5 (author’s claim)
- Posted
- Oct 4, 2026
- Length
- 70s
- What we checked
- From the open awesome-fable5-5-videos list (MIT, Copyright (c) 2026 yihui-dev). On Oct 31, 2026 the post was still live on X; which model actually ran is the author’s claim.
- Longer write-up
- Read our notes on this work
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