Context window
The amount of text (measured in tokens) a model can consider at once, covering your messages, its replies, files, and tool output. Effectively the model's working memory.
“The whole codebase won't fit in the context window, so the agent searches for what it needs.”
See also
Part of the Extended list
Context window is on the Extended list: builder jargon, industry terms, and newer slang for when you want to go further. It entered common use around 2023.