AI System Prompt Builder — Free Tool

Build professional system prompts for ChatGPT, Claude, Gemini and any LLM. Fill in the fields and copy the generated prompt.

Quick templates: AI Assistant Content Writer Code Helper Customer Support Data Analyst Sales Agent

Role / Identity

Company / Product

Primary Goal

Target Audience

Tone & Style

Response Format

Expertise / Knowledge Domain

Rules & Constraints

Example Interaction (optional)

Generated System Prompt

Fill in the fields above to generate your system prompt...