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All Tutorials /ChatGPT

How to Create a Customer Testimonial Generator GPT

Updated on:
May 12, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to build a custom testimonial generator GPT in ChatGPT.

Quick summary

A custom ChatGPT GPT lets you build a dedicated customer testimonial generator by configuring a name, instructions, conversation starters, and knowledge files — all without writing any code. Once published, the GPT can instantly produce on-brand testimonials on demand for any team member or stakeholder.


Steps

  1. In ChatGPT's main interface, open the left-side panel and click Explore GPTs.
  2. Tap Create at the top-right corner to begin building a new GPT.
  3. Switch from the Create tab to the Configure tab.
  4. Click the Add icon to upload a distinctive display photo for your testimonial generator GPT.
  5. Enter a unique GPT Name and Description into their respective input fields.
  6. Click the Instructions field and write a detailed description covering the purpose, behavior, and capabilities of your customer testimonial generator.
  7. Add text prompt examples by typing them individually into the Conversation Starters input field.
  8. Optionally, click Upload Files under the Knowledge section to import reference documents for the GPT to draw from.
  9. In the Capabilities section, tick the checkboxes for the GPT functions you want to enable and configure any Actions for third-party integrations.
  10. Go to the Preview Area, type a test prompt, and click Submit to evaluate your GPT's output.
  11. If satisfied with the results, click Create at the top-right corner to finalize the GPT.
  12. Choose your preferred access configuration and click Save to proceed.
  13. Your customer testimonial generator GPT is now created and published.

📌 Why this matters

Building a custom GPT for customer testimonials lets businesses automate the collection and generation of high-quality social proof at scale, without relying on manual outreach or copywriting. A dedicated testimonial generator GPT can be configured with brand-specific instructions, tone guidelines, and reference documents, ensuring every output stays consistent and on-message. This approach dramatically reduces the time marketers and sales teams spend crafting testimonials, freeing them to focus on higher-value activities. For any company that depends on customer trust signals to drive conversions, a purpose-built ChatGPT GPT is a fast, scalable, and no-code solution.
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