What GPTs Are
GPTs are purpose-built assistants that run on top of ChatGPT's models. They combine three things:
- Custom instructions — a preset system prompt that defines how the GPT behaves
- Enabled tools — web browsing, image generation, code execution, or custom APIs
- Knowledge files — uploaded documents the GPT can reference when answering
The result: a focused assistant that does not need you to explain context every time. A legal research GPT knows it is dealing with legal topics. A brand voice GPT knows your company's tone guidelines.
Over two million GPTs have been created. Most are free to use.
How to Find and Open a GPT
- Go to chat.openai.com and sign in
- Click Explore GPTs in the left sidebar (or go to chat.openai.com/gpts)
- Browse by category or use the search bar
- Click any GPT to open its detail page
- Click Start Chat to begin
The GPT opens like a regular chat window. Type your first message and the GPT responds according to its instructions.
The GPT Store: Categories Worth Exploring
- Writing — Copywriting, editing, tone adjustment, essay feedback
- Productivity — Summarizers, meeting note takers, email drafters
- Research & Analysis — Web research assistants, data interpreters
- Programming — Code review, debugging, language-specific tutors
- Education — Subject tutors, language learning, quiz generators
- Image Generation — Specialized DALL-E wrappers with style presets
Finding high-quality GPTs: Sort by number of conversations. A GPT with 500,000+ chats has been validated by a large user base. Read the description carefully — the best GPTs explain exactly what they do and do not do.
How to Pin Frequently Used GPTs
If you use a GPT regularly, pin it for quick access:
- Hover over the GPT in your sidebar or recent conversations
- Click the three-dot menu (⋯)
- Select Pin — it appears at the top of your sidebar permanently
You can also pin GPTs from the store page before starting a conversation.
How to Create Your Own GPT (Plus Required)
Step 1: Open the GPT Builder
Go to chat.openai.com/gpts → Create. You will see a split screen: the builder chat on the left, the preview on the right.
Step 2: Describe What You Want
In the builder chat, type what your GPT should do:
"Create a GPT that helps me write product descriptions for an e-commerce store selling handmade jewelry. It should ask for the product name, materials, and target customer before writing. Output should be 80–120 words, SEO-friendly, with no clichés."
The builder generates a name, profile image, and initial instructions automatically.
Step 3: Refine the Instructions
Switch to the Configure tab to see and edit the raw instructions. Review:
- Name and description — what shows up in the store and sidebar
- Instructions — the system prompt that defines behavior
- Conversation starters — suggested prompts shown on the GPT's opening screen
- Knowledge — upload files (PDFs, text) the GPT should reference
Step 4: Enable Tools
Choose which tools to give your GPT:
- Web Search — lets the GPT browse the internet
- DALL-E Image Generation — creates images on request
- Code Interpreter — runs Python code, analyzes files and data
Only enable tools your GPT actually needs — every additional tool increases the chance of the GPT going off-task.
Step 5: Set Visibility and Save
- Only me — private, only visible to your account
- Anyone with the link — unlisted, accessible via direct URL
- Everyone — published to the GPT Store
Click Save. Your GPT is live immediately.
Common Mistakes to Avoid
- Using a GPT for tasks outside its scope — A writing GPT will handle code worse than regular ChatGPT. Switch to the right tool for the task.
- Trusting GPT Store descriptions blindly — Anyone can publish a GPT. Test a few messages before relying on one for important work.
- Uploading sensitive documents to third-party GPTs — When you upload a file to a GPT you did not build, it may be processed by external APIs attached to that GPT. Only upload non-sensitive documents to untrusted GPTs.
- Building GPTs with vague instructions — "Be helpful and smart" produces a generic GPT indistinguishable from regular ChatGPT. Specific constraints ("always ask for the target audience before writing," "never use bullet points") produce meaningfully different behavior.
- Ignoring the conversation starters — These are the first things users see. Use them to show the GPT's range and guide users to its best use cases.