Build custom GPTs that actually deliver consistent results
Step-by-step guidance for writing detailed, structured GPT instructions that produce reliable outputs.
Built by James Killick
The problem
Custom GPTs underperform because the instructions are vague, contradictory or incomplete. Most people write a few sentences and hope for the best. The result is inconsistent outputs that frustrate users and waste time.
How it works
Describe what your GPT should do, who it is for and what outputs you need
The assistant walks you through each section of the instruction set
You get a complete, structured instruction document ready to paste into your GPT
Key features
Step-by-step instruction writing framework covering all critical sections
Identifies gaps and contradictions in existing GPT instructions
Covers persona definition, constraints, output formatting and edge cases
Produces instructions that deliver consistent, reliable GPT behaviour
Who it's for
AI builders creating custom GPTs for specific use cases
Agency owners building GPTs as deliverables for clients
Teams building internal AI tools that need to work reliably every time
Try GPT Creation Assistant for free
This GPT guides you step by step to write detailed, structured instructions that produce consistent results. It covers persona, constraints, output formatting, edge cases and testing, so your GPT works reliably from day one.