Building your own custom GPT on OpenAI

Introduced by OpenAI, powerful Generative Pre-trained Transformer (GPT) language models have spread out new frontiers in Natural Language Processing (NLP). The integration of GPT models into virtual assistants and chatbots boosts their abilities, which has led to a surge in demand for GPT models. GPT models are a set of deep learning-based language models created by the OpenAI team. Without supervision, those models can perform numerous NLP duties like query-answering, textual entailment, text summarization, and many others. These language models require very few or no examples to understand tasks. They carry out tasks equal to, or maybe better than, modern models trained in a supervised style.

How to build your own custom GPTs; Source: Jussi Hyvarinen

What are GPTs?

GPT stands for Generative Pre-trained Transformer, the first generalized language version of NLP. Previously, language models were simply designed for single obligations like text generation, summarization, or classification. GPT is the first generalized language model ever created in the history of natural language processing that may be used for diverse NLP duties. Now let us explore the three parts of GPT: generative, pre-trained, and transformer, and understand what they mean.

ChatGPT; Source: Mint

Generative: Generative models are statistical models used to generate new facts. These models can learn the relationships between variables in a data set to generate new records with factors similar to the ones in the original data set.

Pre-trained: These models have been Pre-trained with the use of a big data set, which may be used when it is hard to train a new version. Although a pre-trained model won't be the best, it can save time and improve performance.

Transformer: The Transformer model, an artificial neural network created in 2017, is the most famous deep learning model able to handle sequential records, which include textual content. Many tasks, like system translation and text classification, are completed using transformer models.

GPT can carry out diverse NLP responsibilities with high accuracy, relying on the huge datasets it was educated on and its architecture of a billion parameters, permitting it to understand the logical connections in the records.

Benefits of making custom GPTs

Building a custom GPT offers several advantages and possibilities. Here are a few reasons why you need to develop your custom GPT:

Custom GPTs; Source: Zapier

Automation: Custom GPTs can automate repetitive duties, which include answering regularly asked questions or imparting personalized tips, saving time and effort. Whether you're a solopreneur or running a small business, a custom GPT will assist you in answering all of the questions you are tired of answering.

Personalization: By creating a custom GPT, you may tailor the chatbot's responses and behavior to align with your unique requirements and target market. This allows you to create custom ChatGPTs that recognize your use case well. As a result, if this is a business chatbot, it can answer customer queries related to a topic without difficulty and more accurately.

Versatility: Custom GPTs can be trained to address various duties and domains, from customer service to content creation and advertising. This makes them adaptable to diverse enterprise needs.

Enhanced user experience: A well-designed custom GPT that can provide a seamless and nice consumer experience, providing accurate and relevant data to users in real-time.

How to build your very own custom ChatGPT

Here's a quick process for how to construct your own custom ChatGPT using OpenAI's GPT builder.

  1. Go to and log in. 
  2. In the sidebar, click on Explore. 
  3. Click Create a GPT. 
  4. Enter your commands in the message box of the Create page. Chat with the GPT builder until you get the results you need.
  5. Click Configure to add more customizations to your AI assistant. For example, you can change your chatbot's name, similarly refine the instructions, upload files, and perform installation actions. 
  6. Click Save, and pick out the way you want to share your custom GPT. 
  7. Click Confirm.  

Now let's take a better look at the finer details of building custom GPTs.  

Custom GPTs in ChatGPT; Source: SaveMyLeads

1. Log in to your OpenAI account

Before you get started, you ought to have a ChatGPT Plus or Enterprise account. If you already have the desired account type, click Log in to begin chatting. 

If you're having trouble logging in, your best bet is to reload your page. For certain login problems, check out OpenAI's troubleshooting solutions.  

2. Create your GPT 

  • In the sidebar, click Explore. 
  • Click Create a GPT. 
  • The GPT builder will show a split display screen: the Create panel is where you enter your prompts to construct your chatbot; the Preview panel allows you to interact with your chatbot as you build, making it less difficult to determine a way to refine it.
  • Enter your commands in the message box of the Create web page, after which press Enter or Return. 
  • The GPT builder will then suggest some things based on your instructions: a chatbot name, profile picture, and default conversation starters.
  • You can be given the preliminary suggestions or ask the GPT builder to alter them. If you get the initial suggestions, you can usually adjust them later on. 
  • The GPT builder will prompt you to go into extra-precise commands to fine-tune your chatbot's behavior. 
  • If you don't know how to alter your chatbot's behavior, that is okay. Check your chatbot in the Preview panel—interact with it how you commonly would—and use its responses to inform your adjustments. For instance, if your chatbot generates prolonged responses, you could possibly inform the builder to keep the responses short. Or if the chatbot produces data without mentioning its sources, you may inform it to cite its resources.
  • Continue to refine your prompts until your chatbot begins to return the type of responses you need to generate.

3. Configure your GPT 

  • Now that you've installed the basics, you can further customize your GPT with advanced settings. 
  • Click Configure. 

If you need to, you may change your chatbot's name and description as you generally would. Here's how to set up the more advanced settings:

Conversation starters. Click X beside any prompt to delete it. Or input a brand new prompt in an empty Conversation Starters field. 

Profile picture. Click on the profile picture. You can upload your own image or use DALLE-3 to routinely generate a new one. If you want to specify what type of photograph DALLE-3 ought to create, click on Create and enter your commands.  

Instructions. Update the commands generated by using the GPT builder, or enter extra instructions or suggestions on how your chatbot should or shouldn't behave. 

Actions. If you need your chatbot to retrieve outside information or take actions outside of the ChatGPT platform, click Add Actions. Here, you can specify the way you need your chatbot to apply any third-party APIs. 

Capabilities. By default, your chatbot can browse the internet and create AI-generated images. If you also want it to run code or analyze facts, click Code Interpreter. 

Knowledge. Want your chatbot to rely on your agency's style manual to draft its responses? Or perhaps you need it to be scanned via PDFs of customers' personas to provide it with extra context. Click Upload documents, and add any applicable files for it to reference.

It's really worth mentioning that your chatbot might not constantly refer to the guide you upload to teach it a way to write alternative text. But this could be because you need to put clearer prompts in your GPT commands. Tinker with it until it's using your uploaded files in the manner you want.

4. Save your GPT 

  • Once you are satisfied with your chatbot, click on Save. (If you already created your custom GPT and are publishing adjustments to it, click Update.) 
  • Select who you want to share your custom chatbot with Only me, only people with a link, or the public. If you're on an Enterprise plan, you will additionally have Anyone at [your company] as an option.
  • Click Confirm. 

ChatGPT, in conjunction with any custom GPTs you construct, will appear in the side panel of the ChatGPT home web page. Click the GPT you need to use and engage with it in the manner you generally would. 

Of course, because the GPT builder is in beta, it's an excellent idea to verify the accuracy of your custom GPT's responses. 

5. Share your GPT 

If you want your custom GPT to be shared with others, here's the best way to share your chatbot. 

  • In the sidebar, click on Explore. 
  • Click on the GPT you need to share. 
  • Click the down caret (∨) next to your chatbot's name. 
  • Click the copy link. 
  • Paste and share the link as you normally would. 


GPT models are a significant milestone in the history of AI development; they are part of a larger LLM model that one can develop in the future. Furthermore, OpenAI’s groundbreaking move to offer API access is part of its model-as-a-service business scheme. Additionally, GPT’s language-based capabilities allow for the development of revolutionary products as it excels at tasks such as text summarization, classification, and interaction. GPT models are anticipated to shape the future internet and how we use generation and software programs. Building a GPT model can be hard; however, with the right approach and tools, it will become a profitable experience that opens up new possibilities for you or your business.

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