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Concept directory
Context Engineering
Context engineering is the practice of selecting, organizing, and maintaining the information a model receives while it works. It includes instructions, tool descriptions, retrieved material, and conversation state.
Context Window
A context window is the token capacity available for a model’s current interaction. It limits how much supplied information and generated content can fit in that interaction, according to the model and service’s accounting rules.
Memory
In agent applications, memory is retained information that can be reused later. It can include conversation state within a session or information saved across sessions, depending on the application.
RAG
Retrieval-augmented generation combines a generative model with retrieved external information. The retrieved material helps inform the response instead of relying only on information encoded in the model’s parameters.
Retrieval
Retrieval is finding relevant information from an external collection in response to a query. Its output can be documents or passages that an application supplies to a model.