What is System Prompt?
Hidden instructions that define how an AI assistant behaves.
Definition
A system prompt is initial context given to an AI that shapes its personality, capabilities, and constraints. ChatGPT, Claude, and others have system prompts defining their behavior. Users can customize system prompts via custom instructions or API calls.
Examples
Why It Matters
System prompts control AI behavior. Understanding them helps you customize AI for your needs and understand why AI responds certain ways.
Related Terms
Common Questions
What does System Prompt mean in simple terms?
Hidden instructions that define how an AI assistant behaves.
Why is System Prompt important for AI users?
System prompts control AI behavior. Understanding them helps you customize AI for your needs and understand why AI responds certain ways.
How does System Prompt relate to AI chatbots like ChatGPT?
System Prompt is a fundamental concept in how AI assistants like ChatGPT, Claude, and Gemini work. For example: You are a helpful assistant... Understanding this helps you use AI tools more effectively.
Related Use Cases
AI Models Using This Concept
See System Prompt in Action
Council lets you compare responses from multiple AI models side-by-side. Experience different approaches to the same prompt instantly.