I Took Notes on Karpathy's 3-Hour LLM Masterclass — Here's Everything | Part-1

13 Jun 2026 · 2 min
2:01

In this Hindi‑language video, Akansha Yadav walks viewers through Andrej Karpathy’s three‑hour masterclass on large language models (LLMs). She emphasizes that solid foundational knowledge is essential before using models like ChatGPT. The talk outlines the entire data‑centric workflow that powers modern LLMs: starting from raw web data harvested by Common Crawl, moving to the curated 44 TB base dataset (≈15 trillion tokens) hosted on Hugging Face, and then detailing the multi‑stage pre‑training pipeline. The pipeline includes URL filtering (removing adult or low‑quality sites), text extraction (stripping HTML, CSS, and other markup), language filtering, profanity and custom filters, and finally personal‑identifiable‑information (PII) removal. Akansha explains each step’s purpose, how it cleans the massive corpus, and why these steps matter for building reliable, safe LLMs. The video is positioned as a concise alternative for viewers who cannot invest three hours in the original masterclass.

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