Every app has its own style
The same AI is brief in one app and wordy in another. The reason is the system prompt.
HIDDEN NOTE
Instructions before you type
A system prompt is a hidden instruction the app gives the AI, read even before your first message.
INSIDE
Role, tone, limits
It usually covers the role, the tone of voice, what it may do and what it must refuse.
YOUR OWN
Your own instructions
Many chatbots let you write your own instructions, like a small system prompt applied to every chat.
This article is based on the video System prompt from the Mark học AI channel. Watch the video (in Vietnamese) to see the animations.