# What is System Prompt?

A set of instructions given to an AI before the conversation starts. It tells the AI how to behave for the entire session.

## In real work

System prompt: You are a senior iOS engineer. Use Swift 6 and SwiftUI. Never suggest UIKit solutions.

## Related terms

- [Few-Shot Example](https://prompthausapp.com/learn/few-shot-example.md)
- [Zero-Shot](https://prompthausapp.com/learn/zero-shot.md)
- [Chain of Thought](https://prompthausapp.com/learn/chain-of-thought.md)
- [Persona](https://prompthausapp.com/learn/persona.md)
- [Constraint](https://prompthausapp.com/learn/constraint.md)

## How is this different from Googling it?

Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.

- Category: Prompting
- HTML: https://prompthausapp.com/learn/system-prompt
- App Store: https://apps.apple.com/us/app/prompthaus-ai-vocabulary/id6776314407