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AI From Scratch/Phase 07/Lesson 14/~120 minutes

Build a Transformer from Scratch — The Capstone

BuildPython

Thirteen lessons. One model. No shortcuts.

Back to phaseTransformers Deep Dive Next lessonAttention Variants — Sliding Window, Sparse, Differential

Phase 07

Transformers Deep Dive

01Why Transformers — The Problems with RNNs 02Self-Attention from Scratch 03Multi-Head Attention 04Positional Encoding — Sinusoidal, RoPE, ALiBi 05The Full Transformer — Encoder + Decoder 06BERT — Masked Language Modeling 07GPT — Causal Language Modeling 08T5, BART — Encoder-Decoder Models 09Vision Transformers (ViT)10Audio Transformers — Whisper Architecture 11Mixture of Experts (MoE)12KV Cache, Flash Attention & Inference Optimization 13Scaling Laws 14Build a Transformer from Scratch — The Capstone 15Attention Variants — Sliding Window, Sparse, Differential 16Speculative Decoding — Draft, Verify, Repeat

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Phase 07

Transformers Deep Dive

01Why Transformers — The Problems with RNNs 02Self-Attention from Scratch 03Multi-Head Attention 04Positional Encoding — Sinusoidal, RoPE, ALiBi 05The Full Transformer — Encoder + Decoder 06BERT — Masked Language Modeling 07GPT — Causal Language Modeling 08T5, BART — Encoder-Decoder Models 09Vision Transformers (ViT)10Audio Transformers — Whisper Architecture 11Mixture of Experts (MoE)12KV Cache, Flash Attention & Inference Optimization 13Scaling Laws 14Build a Transformer from Scratch — The Capstone 15Attention Variants — Sliding Window, Sparse, Differential 16Speculative Decoding — Draft, Verify, Repeat

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The Annotated Transformer (Harvard NLP)Reading Transformer ReviewSkill main.pyCode Source lessonSource