Every AI model has a maximum amount of text it can process in one go; once you exceed that window, it forgets earlier content, which means you need to manage what information stays active. This is a hard technical limit, not a soft guideline.
A context window is the maximum amount of text an AI model can process and hold in its working memory during a single conversation, measured in tokens. Once a conversation exceeds this limit, earlier parts of the chat effectively disappear from the AI view.
Understanding context windows helps you avoid broken or inconsistent AI responses in long sessions by knowing when to summarize, reset, or restructure your conversation. Managing context well is one of the most practical skills for getting reliable results from any AI tool.
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