Artificial intelligence (AI)

Create Your Own GPT – Step-by-Step Guide

thumbnail photo of jordy hartendorp from kleritt
by
Jordy Hartendorp
Created on:
October 27, 2025
Last updated on:
November 5, 2025
start screen of chatgpt to create your own gpt
A GPT is a customised version of ChatGPT that you can tailor to your business needs, for example to answer customer questions, process documents, or help your team work faster. You can combine clear instructions, your own knowledge, and specific capabilities to make it act exactly the way you want.

OpenAI recently launched the GPT Store, where you can create, publish, and share your own GPTs. They can be as simple or advanced as you need, from handling customer emails to supporting technical workflows.

If you’re a ChatGPT Plus or Enterprise user, you can start right away on chat.openai.com/create.

Creating your own GPT takes just a few steps. Below you’ll find a short guide, and if you prefer a business-ready setup, Kleritt can help you design, brand, and secure your GPT for company use.

How to Create Your Own GPT

  1. Go to the GPT editor: Visit chat.openai.com/gpts/editor or click your name in ChatGPT and select “My GPTs.”
  2. Select “Create a GPT.” This opens the GPT Builder, an assistant that guides you through setup.
  3. Describe what you want it to do. For example:
    • “Create a virtual assistant that answers customer support questions.”
    • “Build a creative marketing helper that suggests new social media ideas.”
  4. Configure your GPT:
    • Give it a name and short description.
    • Choose features like web browsing, image creation, or data analysis.
  5. Customise further in the advanced editor:
    • Add images: Upload visuals or let GPT Builder generate them.
    • Enter detailed instructions: Explain tone, response style, and tasks.
    • Add prompt starters: Preload example questions for users.
    • Provide business knowledge: Upload internal documents or guides so your GPT understands your brand and data.
    • Enable extra capabilities: Activate web access or external API connections if you want advanced functionality.
  6. Publish your GPT: Once ready, click “Publish.” You can keep it private or share it in the GPT Store so others can use it.

Once your GPT is live, you can use it internally for your team, share it with clients, or embed it into workflows like customer service, HR, or sales support.

How Kleritt Helps Businesses Build Their Own GPT

At Kleritt, we specialise in helping SMBs turn ChatGPT into professional, tailored solutions that align with your brand and operations.

We can:

  • Define your GPT’s purpose, tone, and use cases.
  • Prepare and structure your company data safely.
  • Optimise prompts and responses to match your voice.
  • Integrate your GPT with business tools and CRM systems.
  • Ensure GDPR compliance and ongoing updates.

Whether you want a customer-facing assistant, an internal helpdesk bot, or a document-processing GPT, we make sure it’s built to perform and scale.

Want to go one step further? Explore our AI Implementation service, we help you transform your GPT into a full AI agent that connects with your systems and performs real tasks for your business.