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All Tutorials /ChatGPT

How to Create a Brand Voice Guide GPT

Updated on:
June 5, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to build and publish a custom Brand Voice Guide GPT in ChatGPT.

Quick summary

A custom GPT brand voice guide lets teams generate on-brand content by encoding tone, style, and messaging rules directly into a ChatGPT GPT. This step-by-step walkthrough covers everything from configuring instructions to publishing your GPT with the right access settings.


Steps

  1. On ChatGPT's main interface, navigate to the left-side panel and click 'Explore GPTs'.
  2. Tap the 'Create' button at the top-right corner to get started.
  3. Switch the tab from Create to 'Configure' to access advanced setup options.
  4. Set a distinctive display photo for your brand voice guide GPT by clicking the 'Add' icon and choosing your image file.
  5. Assign a unique GPT Name and Description by entering details into their respective input fields.
  6. Write detailed guidelines describing the purpose, behavior, and capabilities of your brand voice guide in the 'Instructions' input field.
  7. Add relevant text prompt examples by typing them one by one into the 'Conversation Starters' input field.
  8. To include external references, scroll to the Knowledge section and click 'Upload Files' to import supporting documents.
  9. In the Capabilities section, tick the checkboxes for the GPT functions you want to enable and configure any Actions for third-party app integrations.
  10. Head to the Preview Area, enter a text prompt, and click 'Submit' to test your brand voice guide GPT for the first time.
  11. Review the initial performance, then click 'Create' at the top-right corner if you are satisfied with the result.
  12. Specify your preferred access configuration, then click 'Save' to finalize settings.
  13. Your brand voice guide GPT is now created and published and ready for use.

📌 Why this matters

Building a custom brand voice guide GPT in ChatGPT allows marketing, content, and communications teams to enforce consistent tone, style, and messaging at scale without manual oversight. By encoding brand guidelines directly into a dedicated GPT, every piece of AI-generated content automatically reflects the company's unique voice. This eliminates the guesswork for writers and accelerates content production while reducing brand inconsistency. For businesses scaling content operations, a brand voice GPT is a practical, low-cost solution to maintain quality and coherence across all channels.
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