FundamentalsFeaturedUpdated 2026-10-24
Context Window
The maximum number of tokens a model can read and remember at once, including input and output.
#基础#长文本#限制
In plain language
The context window determines how much documentation, conversation or code a model can handle at once. Larger windows allow more material but cost more and add latency. Content beyond the window is truncated or must be chunked.
Example
A 200K-token window is roughly 150,000 English words, enough for a full book.
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