Wiki: What is a context window?

Definition A context window is the amount of input a model can read in one interaction.

Why it matters Doctors often assume bigger context means better answers. In practice, long context helps only if the model can still identify the relevant signal inside the material.

Clinical analogy Giving a trainee the whole chart is useful only if they can still find the key note, trend, or result that matters.

Rule Use long context to reduce retrieval friction, not to avoid thinking about structure.