Karpathy's GPT Tutorial Goes Viral Again

This is less a news drop than proof that high-signal technical education has product-like staying power. Karpathy's videos keep resurfacing because they move people from "using LLMs" to actually understanding how they work.

• –The tutorial starts from first principles instead of hiding behind framework abstractions
• –It gives developers a concrete mental model for tokenization, attention, training loops, and generation
• –The format is the differentiator: free, self-contained, and dense enough to be worth resharing years later
• –For beginners, it's a stronger on-ramp than most "build your own GPT" threads because the implementation details are explicit