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All Tutorials /ChatGPT

How to Create Your First Custom GPT

Updated on:
May 12, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to build and publish your own custom GPT from scratch.

Quick summary

A custom GPT lets you build a personalized AI assistant in ChatGPT by defining its name, instructions, knowledge, and capabilities. This step-by-step walkthrough covers everything from opening the GPT builder to configuring access settings and publishing your finished model.


Steps

  1. On ChatGPT's main interface, open the left-side panel and click 'Explore GPTs'.
  2. Click the 'Create' button at the top-right corner to start building a new GPT.
  3. Click the 'Configure' tab to access the manual setup options.
  4. Click the 'Add' button under the profile photo section and upload an image to set a display photo for your custom GPT.
  5. Enter a unique Name and Description into their respective input fields.
  6. Write detailed guidelines covering behavior, purpose, personality, and capabilities, then type them into the 'Instructions' field.
  7. Add sample text prompts one by one into the 'Conversation Starters' input field.
  8. Click 'Upload Files' under the Knowledge section to attach external reference documents.
  9. Under Capabilities, tick the checkboxes for functions you want to enable, and optionally configure Actions to integrate with third-party tools.
  10. In the Preview Area, enter a test prompt and click 'Submit' to try your custom GPT.
  11. If satisfied with the result, click 'Create' to proceed.
  12. Configure your Access Settings based on your sharing preference, then click 'Save'.
  13. Your custom GPT is now created and published and ready to use.

📌 Why this matters

Building a custom GPT in ChatGPT allows individuals and teams to create a purpose-built AI assistant tailored to specific workflows, audiences, or knowledge domains — without writing a single line of code. Custom GPTs can follow unique instructions, reference uploaded documents, and integrate with third-party tools via Actions, making them far more powerful than the default ChatGPT experience. This capability is especially valuable for businesses looking to automate support, standardize responses, or deliver specialized AI tools to their users. Understanding how to create and publish a custom GPT is a foundational skill for anyone looking to maximize the value of a ChatGPT Plus subscription.
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