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microGPT: Karpathy Shreds GPT's Hype in 200 Lines

Karpathy built GPT from scratch. In 200 lines. Turns out, the emperor's got no clothes.

Sarah Chen πŸ“… Mar 29, 2026 ⏱️ 3 min read πŸ‘οΈ 3 views
Code screenshot of Andrej Karpathy's microGPT Python implementation

⚑ Key Takeaways

  • microGPT proves GPT is just next-token prediction in plain Python
  • Gradient descent automates the 'magic' β€” no wizards required
  • Minimal code hints at AI commoditization on edge devices

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Sarah Chen
Written by

Sarah Chen

AI research editor covering LLMs, benchmarks, and the race between frontier labs. Previously at MIT CSAIL.

#Andrej Karpathy #GPT explained #MicroGPT #neural networks #tiny ML #transformer architecture

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Originally reported by Towards AI

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