Library
AI by Hand ✍️ is the research publication of By Hand Research, founded by Prof. Tom Yeh. By Hand Research studies model interpretability and explainability at the math and algorithm level. Subscribers receive free new articles and join live seminars. Members get access to our full research library.
Models
Attention
Fine-Tuning
Math
Activation
Matrix Multiplication
Calculating AI by Hand ✍️
Videos
Seminar Series 2026
Seminar Series 2025
Drawings
Frontier AI Drawings
Workbooks
Token Problems
What I cannot create, I do not understand.
— Richard Feynman
💡 Pro tip: Get reimbursed
AI by Hand membership is designed for professionals working in industry. Most members don't pay out of pocket. Their companies cover it. The membership fits naturally within your professional development budget, and it costs less than a single traditional training course. Just ask.
📧 Template email to your manager/HR:
Hi [Manager's Name],
I'd like to join AI by Hand ($29/month), the research publication of By Hand Research founded by Prof. Tom Yeh.
Many leading AI companies already sponsor their teams because it's the only place that systematically connects foundational math and algorithms to frontier architectures and grounds it in actual interpretability research. The material maps directly to the AI models we use in practice, making it immediately relevant to my current projects.
Can we expense this under our training / professional development budget?
Thanks!