Context Window

The context window is the maximum amount of text an AI model can process and "remember" in a single conversation. Everything outside the context window — earlier parts of a long conversation, documents uploaded previously — is invisible to the model. Context windows are measured in tokens (roughly 0.75 words per token).

Modern models have context windows ranging from tens of thousands to over a million tokens. For business users, context window size determines how long your documents can be, how much conversation history the AI retains, and how complex the tasks it can handle in one session.