Planning Your GPT's Purpose
Before opening the GPT Builder, take a few minutes to plan. A well-defined purpose is the difference between a GPT that's genuinely useful and one that's just "ChatGPT with a name."
The Purpose Statement
Start by completing this sentence:
"My GPT helps [who] to [do what] by [how]."
For example:
- "My GPT helps job seekers to write cover letters by asking about their experience and the job, then generating tailored letters."
- "My GPT helps home cooks to plan weekly meals by considering their dietary restrictions and suggesting recipes with shopping lists."
Define Your User
Who will use your GPT? Be specific:
| Vague | Specific |
|---|---|
| "People" | "Small business owners with 1-10 employees" |
| "Students" | "High school students preparing for AP exams" |
| "Anyone" | "Beginner photographers learning composition" |
The more specific your user, the better your GPT can serve them.
List Core Tasks
What should your GPT be able to do? List 3-5 core tasks:
Example for a "Meeting Notes GPT":
- Summarize meeting transcripts into bullet points
- Extract action items with assigned owners
- Identify decisions that were made
- Flag topics that need follow-up
- Format notes for email distribution
Define Boundaries
What should your GPT NOT do? Setting boundaries:
- Keeps responses focused
- Prevents confusing users
- Makes your GPT more reliable
Example boundaries:
- "Don't give medical advice—suggest consulting a doctor"
- "Don't write content longer than 500 words"
- "Don't discuss topics outside of cooking"
Choose Your GPT's Tone
How should your GPT communicate?
| Tone | Best For |
|---|---|
| Professional | Business tools, technical assistants |
| Friendly | Learning helpers, creative assistants |
| Encouraging | Coaches, fitness/wellness tools |
| Direct | Productivity tools, quick-answer bots |
| Playful | Games, entertainment, kids' tools |
Planning Worksheet
Fill out this quick worksheet before building:
Common Planning Mistakes
Too broad: "A GPT that helps with everything"
- Fix: Pick one specific use case to start
Too narrow: "A GPT that only answers questions about page 47 of a specific textbook"
- Fix: Expand to cover the full topic area
No clear user: "For anyone who might find it useful"
- Fix: Picture one specific person who'd benefit most
Example: Fully Planned GPT
Here's a complete example:
- Name: Interview Prep Coach
- Purpose: Helps job seekers prepare for interviews by conducting mock interviews and providing feedback
- User: Professionals preparing for job interviews in tech or business
- Core tasks:
- Ask common interview questions
- Give feedback on answers
- Suggest improvements
- Explain the STAR method
- Help with "tell me about yourself"
- Boundaries: Won't write answers to memorize, won't guarantee job offers
- Tone: Encouraging but honest
- Tagline: "Your personal interview coach—practice makes prepared!"
Key Takeaway
Time spent planning saves time building. With a clear purpose, defined user, and specific tasks, you're ready to start building. In the next lesson, you'll turn this plan into instructions your GPT will follow.

