Grant Sanderson
Mathematician & Educator (3Blue1Brown)
About
Grant Sanderson is a mathematician and the creator of 3Blue1Brown, a YouTube channel renowned for its visually stunning explanations of mathematical concepts. His series on neural networks and transformers has become essential viewing for anyone seeking to understand how AI and large language models work. Using his custom animation engine Manim, he makes complex topics like attention mechanisms and GPT architectures accessible to millions.
Key Contributions
- Created 3Blue1Brown, making visual mathematical explanation a serious educational genre rather than a gimmick
- Built Manim, the animation engine behind his videos and a tool adopted by other math educators
- Produced neural-network, transformer, and attention videos that became common entry points for understanding LLM mechanics
- Helped normalize collaborative online math culture through projects such as the Summer of Math Exposition
- Shows how careful visualization can preserve rigor while lowering the intimidation barrier around abstract ideas
- His polished explanations are powerful, though any short visual account risks hiding the messy details of research practice
Videos & Interviews
Attention in Transformers, Step-by-Step | Deep Learning Chapter 6
Clear visualization of the attention mechanism powering LLMs
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But what is a neural network?
Deep Learning Chapter 1 - Foundational explanation of neural networks with beautiful animations
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Transformers, the Tech Behind LLMs | Deep Learning Chapter 5
Visual introduction to transformers and large language models
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Reinventing Entropy | Compression is Intelligence Part 1
Grant Sanderson explores Shannon entropy, compression, and the link between information theory and intelligence.
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