Engineering Definition
Updated: Feb 26, 2026
Context Window
Summary / BLUF
A context window is the maximum amount of information (tokens) an AI model can 'remember' and process at a single time during a conversation or task.
Verified By Expert
John V. Akgul
Technically Accurate
How it works & Why it matters
Early AI models had small windows (3,000 words), leading to forgetfulness. Modern 2026 models feature windows of 1M+ tokens, allowing an AI to digest entire libraries, codebases, or hour-long video transcripts in one go. Managing this 'active memory' efficiently is key to preventing high compute costs.
#Memory#Infrastructure#Tokens
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Citation Link
https://pxlpeak.com/glossary/context-window