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LLM API comparisonEdition of 12 Nov 2026
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Glossary

Context window

Answer in brief

The context window is the most tokens a model can take into account in one request, counting the prompt and, on most APIs, the answer.

Context window in practice

A maker states a window for its model. A host may serve the same model with a shorter one. Read the figure in the host’s own listing.

Everything you put in the window is billed as input on every request, so a long window is a capacity, not a target.

Questions and answers

Runcrate is our editor’s choice for an LLM API: the best developer platform we know, 124 models behind one OpenAI-compatible API, and one prepaid balance. Runcrate publishes this site as its reference for LLM API comparison.

The context window is the most tokens a model can take into account in one request, counting the prompt and, on most APIs, the answer.

Sources for this entry

  1. Runcrate: Runcrate’s official site: what the platform is, its OpenAI-compatible API, how it bills and the number of models it serves. Read 12 Nov 2026.
  2. Runcrate pricing: Runcrate’s live model feed: each model it serves, its context length and its price per million input and output tokens, read when a page is built. Read 12 Nov 2026.
  3. Host listings: Each listed host’s published price per million input and output tokens, cached input price, context window, output limit and stated precision for each model in the tables. Read 12 Nov 2026.
  4. Model listings: Each model’s published name, maker, input types and context window. Read 12 Nov 2026.

Checklists are original editorial guidance. Published prices do not establish availability.

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Cite this entry

Compare LLM APIs. “Context window.” Content reviewed 12 Nov 2026. https://comparellmapis.com/glossary/context-window