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LLM Systems Foundations

18 hour guided path
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Tokens and Tokenization

How model inputs become discrete identifiers and why token boundaries affect cost and meaning.

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Available labs

Tokenization and Context Window Visualizer

Inspect deterministic token approximations and allocate a finite context budget.

Sampling and Decoding Explorer

Explore how temperature and top-p reshape a fixed token distribution.

Prompt RAG Fine-Tuning or Tool-Use Decision Lab

Match system symptoms and constraints to an appropriate intervention strategy.

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