What is Context Window?
The limited amount of text an AI model can consider at once; when it fills up, earlier code may be dropped.

window full · first file dropped
A context window is…
Write it in your own words in the app.
In real work
If the agent forgot the earlier file, the context window may have dropped it, so re-attach the key snippet.
In the illustration
File sheets feed in from the front and the carriage frame holds four; as a fifth sheet enters, the earliest file slides off the back into the drop bin.
Keep the context window small in your coding agent: start a fresh session for this bug and paste only the error and the function it points to.
Try it now
The fastest way to learn a word is to use it. Open this line in the agent you already work in and watch what it does. Change the tool to the one you use.
Go further
01Practice
Make it stick
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02Verify
Prove you know it
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03Career
Find the work that uses it
See which roles lean on this vocabulary, and what they pay in year one.





