What You Need to Get Started
- ChatGPT Plus subscription ($20/month) — GPT creation requires Plus
- A clear use case — the best GPTs solve a specific problem
- Optional: knowledge files — PDFs, docs, or data your GPT should know
Step 1: Open the GPT Builder
Go to chat.openai.com, click "Explore GPTs" in the sidebar, then click "Create". This opens the GPT Builder — a conversational interface where you describe your GPT and it configures itself.
Step 2: Describe Your GPT
The builder will ask: "What would you like to make?" Be specific. Instead of "a writing assistant," say "a GPT that helps SaaS founders write cold outreach emails in a direct, conversational tone with short sentences and a clear CTA."
The builder will generate a name, description, and initial instructions based on your description.
Step 3: Refine the Configuration
Switch to the "Configure" tab to fine-tune:
- Instructions — detailed behavior guidelines (tone, what to do/avoid, format)
- Knowledge — upload files your GPT should reference (PDFs, spreadsheets, text files)
- Capabilities — enable/disable web browsing, image generation, code execution
- Actions — connect external APIs (advanced, requires API spec)
Step 4: Test Thoroughly
Use the preview pane on the right to test edge cases. Try to break it — ask questions it shouldn't answer, test the knowledge files, and verify the tone is consistent.
Step 5: Publish
Click "Save" and choose visibility:
- Only me — private, for personal use
- Anyone with the link — sharable but not in the store
- Public (GPT Store) — discoverable by everyone
Tips for a Great GPT
- Keep the use case narrow — the best GPTs do one thing exceptionally well
- Write detailed instructions — vague instructions produce inconsistent results
- Include example conversations in your instructions
- Use conversation starters to guide new users
- Update regularly — good GPTs improve over time based on what users ask