Lesson60 seconds
What is Function Calling?
Letting the model request a real tool or API mid-answer.
Step 1 of 9
Simple Definition
Function calling (tool use) lets a model emit structured calls to developer-defined functions, then continue after receiving results.
Explanation level
Tap a persona to hear the same idea in a totally different voice.
Try “Like I'm 5™” for a picture-book version - not the grown-up wording above.
Notebook
Your notes
Notes save automatically on this device
Knowledge graph
Done Here Next