Free AI Prompt Builder
Build effective AI writing prompts step by step. Works with ChatGPT, Claude, and Gemini. No signup required.
Build Your Prompt
Quick Start Templates
Be specific about what you want. Vague prompts get vague results.
Recommended
Role assignment activates domain-specific knowledge patterns.
Optional
Anthropic calls this "context engineering" - the right info for the task.
Optional
Recommended
OpenAI recommends explicit output formatting for reliable results.
Optional
Optional
Explicit boundaries help the model meet your actual needs.
Optional - improves consistency
Provide 1-3 input/output examples for style/format matching.
Generated Prompt
Your generated prompt will appear here as you fill in the form...
Research-Backed Tips
- Structure beats verbosity - organized prompts outperform lengthy ones
- Chain of Thought - "think step by step" improves reasoning (Wei et al.)
- Claude loves XML - trained on XML tags for better structure
- Iterate - treat first outputs as drafts, refine with feedback
- Be specific - include audience, constraints, and format