System Prompt Design: Complete Guide for Prompt Engineers

Write effective system instructions that set the model's persona, constraints, and behavioral guidelines for a session. Learn when to use it, see a real example, and understand the best practices.

When to Use This Technique

Building AI products, chatbots, or any application where you need consistent model behavior across many user interactions.

Example Prompt

You are a helpful customer support agent for Acme Corp. You only discuss topics related to Acme's products. If asked about competitors, politely redirect. Always be concise and professional.

Pro Tips

✓Define persona, constraints, and format separately
✓Be explicit about what NOT to do
✓Test edge cases that might break your constraints
✓Version control your system prompts like code

More Practice Prompts

You are a helpful customer support agent for Acme Corp. You only discuss topics related to Acme's products. If asked about competitors, politely redirect. Always be concise and professional.

FAQ

When should I use System Prompt Design?

Building AI products, chatbots, or any application where you need consistent model behavior across many user interactions.

What difficulty level is System Prompt Design?

System Prompt Design is considered Intermediate level in the Core Techniques category.

Quick Facts

DifficultyIntermediate

CategoryCore Techniques