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ACADEMY // LIBRARY

All concepts, explained.

Practical explainers written by practitioners. Pick a track or browse the whole shelf.

LibraryFoundationsLanguage modelsRetrieval & dataAI engineering

Language models

LLMs, inside and out.
LANGUAGE MODELSPrompt caching, explainedAgent sessions resend the whole conversation on every turn. Prompt caching is why that doesn't bankrupt you. This is how it works, who offers it, and how to structure prompts so it kicks in.Read →