Chapter 10: Multi-Head Attention and the MLP Block

📰 Dev.to · Gary Jackson

Learn to implement multi-head attention and the MLP block in a transformer model, crucial components for natural language processing tasks.

intermediate Published 29 Apr 2026
Action Steps
  1. Implement multi-head attention by running several attention heads in parallel on embedding slices
  2. Add a two-layer MLP for per-position computation
  3. Assemble a transformer block by combining the multi-head attention and MLP
  4. Use the transformer block to build a GPT model from scratch
  5. Test the GPT model on a dataset to evaluate its performance
Who Needs to Know This

Machine learning engineers and data scientists can benefit from this tutorial to improve their understanding of transformer architecture and implement it in their projects.

Key Insight

💡 Multi-head attention allows the model to jointly attend to information from different representation subspaces at different positions.

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🤖 Learn to build a GPT model from scratch with multi-head attention and MLP block! 💻
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