Glossary · AI
System Prompt
Instructions that set an assistant's behaviour, separate from user messages.
What is System Prompt?
A system prompt is the standing instruction that shapes how an assistant behaves — its role, tone, and constraints — independent of any single user message.
It defines the app's persona while user prompts drive each turn.
System Prompt in context
To understand System Prompt fully, it helps to know the concepts around it. Prompt, the input text that instructs an LLM what to do. Large Language Model (LLM), a neural network trained on large text corpora to generate and understand language.
Together these describe how ai works in practice for an AI app, and where System Prompt fits among them.
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