Context Window

You might say

The AI forgets what I said at the start of a long chat. Does it have a memory limit?

The total amount of input and output a model can process in one requestAfter a long chat, “follow the first requirement” can fail if that requirement was not included in the current request. More context capacity does not make every piece of information relevant.

Know first

Token

Context Length

What fills the space for one answer?

This request allows up to 1,000 illustrative Tokens560 input + 200 output reserved

System rules180 Token (illustrative)

Current task120 Token (illustrative)

login.js260 Token (illustrative)

It still fits, with room reserved for the model’s answer.

Quick checkChoose the best answer

An Agent starts missing newly added requirements and replies often cut off. Before continuing the same task, what should you do first?

Identify the rules, material, and recent decisions the task needs, summarize older content, and reserve answer spaceKeep every input and reduce the response reserve as much as possibleSend another message and paste the remaining material there

You can say this to an AI Agent

Before continuing this task, list the rules, files, and recent decisions that must remain, then compress older material into a short working brief. Show me that brief and the material you recommend excluding for confirmation before proceeding; do not assume you can delete the current conversation.