Hi! I’m Alden, and I built my own ChatGPT, all about me, for less than $100. The best part, you can too!
In about 10 minutes, I built a chatbot trained on virtually all my publicly-available information. Think of it as AldenGPT
So yes – it might have costed Bloomberg $100M to build his BloombergGPT — but anyone can now build their own GPT within minutes.
Let’s see how, shall we?
Live Demo
Why Build “Your Own Niche”.GPT?
In today’s digital age, there is an abundance of information, but a scarcity of personalized interaction and tailored responses. This is where building “Your Own Niche”.GPT comes into play. This concept goes beyond the conventional AI experience, making it not just about what AI can do, but about what you can do with AI. Here’s why creating your own personalized GPT can be transformative:
Personalized Experience
Building a chatbot trained specifically on your niche allows for an incredibly customized and engaging interaction. Whether it’s a hobby like gardening, a unique business model, or a specific academic subject, your niche GPT will provide responses that mirror your thoughts, your expertise, and your passion.
Unleashing Creativity
Your niche could be anything, from woodworking to quantum physics. By creating a chatbot dedicated to that subject, you’re empowering yourself to experiment, learn, and share your knowledge with others. The sky’s the limit!
Accessibility and Affordability
Building “Your Own Niche”.GPT is not restricted to big corporations or tech gurus. With platforms like CustomGPT, creating a personalized AI system has become accessible and affordable. Even within a budget of $100, as highlighted by the AldenBot example, you can have a powerful, customized AI.
Showcasing Your Brand or Personality
Whether you’re a business owner or an individual, your personalized GPT is a reflection of your brand or personality. It allows you to showcase what makes you unique, offering an experience that stands out in the crowded digital space.
Even better, you might have created some fantastic information and expertise in your lifetime like this Harvard professor. Wouldn’t it be nice to have it codified into a GPT chatbot?
“We are essentially looking to turn all of my previous works, talks, and dissertations and turn them into a chatbot where you can ask me any question” – Harvard Professor.
Accessibility
Building a bot trained in your niche is not only a fun way to share your passions but can also be a tool for democratizing access to your field and expertise. By creating your bot and sharing it on your website, social media, and other widely accessible platforms, you give users everywhere the ability to interact with you or your work.
How Does This Work?
A chatbot built using ChatGPT works by using a big computer program called a language model to understand and respond to people’s questions. Think of it like a really smart robot that you can talk to.
When you ask the chatbot a question, it takes your words and tries to understand what you’re asking. Then, it looks through all the information it has been trained on to find an answer. This information will be the collection of articles or pages that you will give it.
Finally, the chatbot uses all the information it has found to come up with an answer to your question. It’s like a detective trying to solve a mystery. It collects all the clues and pieces them together to find the answer.
The more information the personal chatbot has been trained on, the better it will be at answering questions.
How To Build Your Own “GPT” For Your Own Niche
Step-By-Step Guide
So without further ado, let’s get rolling.
Step 1: Choose Your Topic
The first step in building your own chatbot is to choose a topic. This can be anything you’re passionate about or knowledgeable about. It can be a celebrity, a sports team, a historical figure, a specific brand, or a keyphrase. Once you’ve chosen your topic, you’ll need to gather information about it. This information will form the basis of your chatbot’s knowledge base.
If you are unsure about how to build your collection, see this library of free tools we have built to help you create your collection of knowledgebases.
For example, let’s say you bot is built about yourself, like the AldenGPT.
Step 2: Collect Your URLs + Create a Sitemap
Next, you’ll need to collect a list of URLs that contain information about your chosen topic. Using this library of free tools, you can collect your URLs from almost anywhere on the web.
Here are just a couple to get you started finding the right URLs:
Or, skip the tedious sitemap-making and use this free tool to find the sitemap of any website
And lastly, if you already have a bunch of URLs to create a sitemap from:
Build Your CustomGPT Chatbot
And now, the final step: To build your personal custom ChatGPT-style chatbot based on the webpages you collected using custom instructions, do these simple steps:
Build Your CustomGPT Chatbot
And now, the final step: To build your personal custom ChatGPT-style chatbot based on the webpages you collected, do these simple steps:
Step 1: Setup Project in CustomGPT
Once you sign up for CustomGPT, select “Create Project” and enter your sitemap URL into your Project.
Step 2 : Enjoy!
That’s it – you are done. In a few minutes, click on the “Ask Me Anything” button and start questioning your ChatBOT just like you would with ChatGPT.
Here is the final “AldenBot” chatbot. Give it a try!
What Can You Do with Your Own Personal GPT?
Creating your own personal GPT isn’t just a technological novelty; it’s a gateway to endless possibilities. Here’s what you can achieve with a GPT that’s tailored to you:
Match Your Style
Your personal GPT can be trained to answer questions based on your knowledge, showcase your expertise, and even draft emails, reflecting your unique style and preferences. It’s more than just automation; it’s personalization.
Deep Dive into Your Hobbies
Imagine having a chatbot that knows all about your favorite hobbies, from cooking to astronomy. It can provide recipes, stargazing tips, and more. It becomes your virtual companion, learning and growing with you.
Turn Your Personal Story into Interaction
Got a life story that’s worth sharing? A personal GPT can turn your experiences, blogs, and videos into an interactive format. It’s like having a digital memoir that converses with readers.
Create an Educational Resource
Teachers and students alike can benefit from a GPT trained on specific subjects. It can provide tailored learning materials, quizzes, and constructive feedback, making education more interactive and engaging.
Make Data-Driven Decisions
By feeding your GPT with specific industry data, you can create a tool that helps in analysis, forecasts, and decision-making. It can be a valuable asset for professionals and entrepreneurs in various fields.
Your own personal GPT is like a digital extension of yourself or your business. It’s a multifaceted tool that adapts to your life, needs, and aspirations. With platforms like CustomGPT, creating this powerful tool is not only feasible but also affordable, even for non-tech-savvy people. The real question isn’t what you can do with your personal GPT; it’s what you want to do. The potential is vast, and the control is in your hands!
Frequently Asked Questions
Is it possible to build my own AI chatbot from my personal content without coding?
Yes. You can build a personal chatbot without coding by loading your public content, such as website pages, FAQs, PDFs, talks, and transcripts, into a no-code RAG chatbot builder and then testing real questions. Alden says he built a chatbot trained on virtually all his publicly available information in about 10 minutes for less than $100. Evan Weber described the appeal this way: u0022I just discovered CustomGPT, and I am absolutely blown away by its capabilities and affordability! This powerful platform allows you to create custom GPT-4 chatbots using your own content, transforming customer service, engagement, and operational efficiency.u0022
What data sources work best for a chatbot trained on me or my niche?
The best sources are the materials that most clearly reflect your expertise: website pages, FAQs, blog posts, PDFs, public talks, interviews, audio or video transcripts, and other structured documents. Start with your highest-authority content first, then add supporting files after removing outdated or duplicate material. Stephanie Warlick summarizes the use case well: u0022Check out CustomGPT.ai where you can dump all your knowledge to automate proposals, customer inquiries and the knowledge base that exists in your head so your team can execute without you.u0022
What does u0022no coding requiredu0022 actually mean when building a personal GPT?
No coding required means you are configuring content and behavior instead of writing software. In practice, that usually means collecting your URLs and files, uploading or crawling them into a knowledge base, choosing a persona or brand style, testing common questions, and deploying the bot as an embed widget, live chat, search bar, or API endpoint. You still need to organize content well, but you do not need to build or train a model from scratch.
What makes a niche GPT different from just connecting ChatGPT to Zapier?
A niche GPT is designed to answer from your own approved sources before it responds, while ChatGPT is a general-purpose model and Zapier mainly automates actions between apps. If your goal is grounded answers from your articles, FAQs, documents, or transcripts, a retrieval-augmented system is the better fit. In a RAG accuracy benchmark, CustomGPT.ai outperformed OpenAI, which matters when you care more about source-grounded responses than general conversation or workflow automation alone.
How do I keep a chatbot trained on my content from making up answers?
Use a retrieval-based setup with clean, current, approved sources, and enable citation support so answers stay tied to the underlying material. Hallucinations usually increase when the knowledge base is thin, outdated, contradictory, or full of duplicates. A strong real-world example comes from The Kendall Project: u0022We love CustomGPT.ai. It’s a fantastic Chat GPT tool kit that has allowed us to create a ‘lab’ for testing AI models. The results? High accuracy and efficiency leave people asking, ‘How did you do it?’ We’ve tested over 30 models with hundreds of iterations using CustomGPT.ai.u0022
Can a niche GPT become a real product or lead-generation tool?
Yes. A niche GPT can work as a productized expert assistant, a lead qualifier, or a way to showcase specialized knowledge when it solves a narrow recurring problem. It is usually easier to market a focused assistant than a general ‘ask me anything’ bot. Barry Barresi shows that kind of positioning in practice: u0022Powered by my custom-built Theory of Change AIM GPT agent on the CustomGPT.ai platform. Rapidly Develop a Credible Theory of Change with AI-Augmented Collaboration.u0022
Will the content I upload to a personal GPT be used to train the underlying AI model?
No. Uploaded data is not used for model training. That matters if you are building a GPT from your own writing, client material, or internal documents, because your content can be used to ground answers without being turned into shared training data. The platform is also listed as GDPR compliant and SOC 2 Type 2 certified.
Conclusion
Building your own chatbot is a fun and rewarding experience. And it might (just might!) save you a ton of time in your daily life. The possibilities are endless, whether it is researching a topic, writing emails, or writing responses in your voice, tone, and style.
By following the steps outlined in this blog post, you’ll be able to build a chatbot on any topic of your choosing. Whether you’re a sports fan, a history buff, or just interested in a particular keyphrase or topic, building a chatbot is a great way to expand your knowledge or dig deeper into a topic. So, why not give it a try today?
Got Questions? Ask them in the comments below. What will you build today?
Related Resources
If you’re exploring how to build with CustomGPT.ai, these guides add useful context and next steps.
- No-Code ChatGPT Builder — A practical look at building AI experiences without coding, including what to expect from a no-code workflow.
- Create An AI Clone — Explains how AI cloning works and what it takes to create a version of yourself for conversations and support.
- What Is A Custom GPT — A clear step-by-step guide to understanding what a custom GPT is and how it can be used in real scenarios.