Glossary · Updated Sep 2, 2026

Context window

The maximum amount of text, measured in tokens, that a model can consider at once, including your prompt, documents, and its reply.

Definition

The context window bounds how much a model can read and write in a single interaction. Larger windows allow whole books, codebases, or long transcripts to be analysed without chunking, though attention quality can degrade toward the middle of very long inputs. Retrieval techniques work around limits by feeding only relevant passages.

Why it matters when choosing a tool

When comparing tools for document analysis, meeting notes, or coding, the context window decides whether the tool can hold your material in view or must summarise and forget.

Where you will meet it

AI Research & Search, AI Knowledge Management, AI Meeting Assistants

Related terms

Token · Retrieval-augmented generation (RAG) · Large language model (LLM)

Tools where this matters

Reviewed products in the related categories