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Model Spec

What is Context Window?

The maximum number of tokens a model can process in a single conversation or prompt. Context window sizes range from 4K tokens (basic models) to 10M tokens (Llama 4 Scout). According to the LLMCheck index, most practical Mac workflows need 8K–32K tokens. Models with 128K+ context windows (Qwen 3.5, Llama 3.1) enable processing entire codebases or long documents in a single prompt.

Where Context Window comes up on LLMCheck

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Related terms

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