The Ultimate Guide to Using GPTs in ChatGPT

25 July 2025 The Ultimate Guide to Using GPTs in ChatGPT

One of the most powerful new features inside ChatGPT is something many users still don’t fully understand: GPTs.
No, we’re not talking about the general "ChatGPT" model here. We’re talking about custom-built GPTs - specialised assistants that can help you write, research, learn, and automate your workflow with precision.

Custom AI Assistants That Supercharge Your Work & Creativity

Discover how to leverage personalised AI to boost productivity, plan, create, and learn.

  • Write: Blog posts, emails
  • Plan: Travels, campaigns
  • Generate: Code, content
  • Summarise: PDFs
  • Learn: New skills

What Are GPTs in ChatGPT?

GPTs (Generative Pre-trained Transformers) are custom versions of ChatGPT designed to perform a specific task or role.

Think of them as mini-apps powered by AI:

Feature ChatGPT Custom GPT
Purpose General-purpose Task-specific
Instructions Needs instructions every time Comes pre-configured
Personality Same personality Custom tone, rules, file access

These GPTs are created using OpenAI's GPT Builder and can include special instructions, personality, tool access (browsing, DALL·E, code interpreter), and uploaded files.

How to Find and Use GPTs (Step-by-Step)

  • Step 1: Log in to ChatGPT

    Go to chat.openai.com and log in.

  • Step 2: Click "Explore GPTs"

    Look for the "Explore GPTs" button on the left sidebar. This opens a searchable marketplace of GPTs.

  • Step 3: Browse or Search

    Browse categories (Productivity, Writing, Education, Programming, etc.) or search for keywords.

  • Step 4: Click & Start Chatting

    Once you choose a GPT, click it, read its description, and click "Start chat".

Real Examples of GPTs You Can Use

Here are popular GPTs you can try now:

Name What It Does
Resume Reviewer Improves your CV with targeted suggestions
AI Marketing Planner Helps you plan campaigns, generate content
Code Tutor Teaches you how to code step-by-step
Recipe Assistant Suggests meals based on ingredients
Instagram Caption Creator Creates witty, engaging captions

How to Create Your Own GPT (No Coding Required)

You can build a GPT in under 10 minutes using ChatGPT's GPT Builder.

Step-by-Step Guide:

  • 1. Click "Explore GPTs" then "Create" in the top-right corner.
  • 2. Chat with the GPT Builder. It will ask:
    • What should your GPT do?
    • What tone should it use?
    • Any reference files or links?
  • 3. Add tools (optional): Web browsing, DALL·E, Code interpreter, File uploads.
  • 4. Give your GPT a name, icon, and description.
  • 5. Save it as private or share it with a link.

You now have your own AI assistant!

Example: Create a Blog Writing Assistant

Instructions to GPT Builder:

  • Task: Write blog posts for small businesses
  • Tone: Casual and clear
  • Tools: Web browsing
  • File: Upload a writing style guide (PDF)

Your GPT will now:

  • Ask questions like "Who is your audience?"
  • Offer SEO keyword suggestions
  • Write drafts in your preferred tone

Advanced Features (For Power Users)

Tool Access

Enable powerful tools like:

  • Code interpreter: Analyse CSVs, run calculations
  • DALL·E: Generate images from text
  • Browser: Pull real-time data
  • File uploads: Let your GPT read your PDFs or Docs

Memory

Enable memory so the GPT can remember things across sessions (like your name, brand voice, or preferences).

You can always turn memory on or off, and delete stored data.

Developer Mode

If you’re a developer, you can:

  • Integrate APIs
  • Connect databases
  • Deploy GPTs for internal use

Everyday Use Case Scenarios

Productivity

  • Weekly planner assistant
  • Email summariser
  • Meeting minute formatter

Business

  • Sales proposal generator
  • Product description writer
  • Customer service FAQ bot

Education

  • Exam prep tutor
  • Essay writing helper
  • Language learning companion

Lifestyle

  • Meal planner
  • Workout coach
  • Packing list generator

Creative

  • Poetry writer
  • Dungeons & Dragons NPC creator
  • Logo idea brainstormer

Are GPTs Safe?

Yes, but always be mindful. Here's what you should know:

  • Public GPTs are reviewed by OpenAI.
  • Private GPTs are only visible to you (unless shared).
  • GPTs can’t access your data unless you upload or input it.
  • You control memory and privacy settings.

Tip: Only use GPTs from creators or companies you trust.

Final Thoughts: GPTs Are the Future of Personalised AI

Instead of using the same chatbot for everything, GPTs let you create specialised AI tools for every job you can imagine.

They're:

  • Easy to use
  • Fast to create
  • Customisable
  • Hugely powerful

Whether you're a content creator, student, entrepreneur, or curious learner, GPTs can make your work easier, faster, and more fun.

 

Don't be afraid to experiment and explore. Use GPTs for a wide range of tasks to understand its capabilities. The more you experiment, the more you'll discover.

Our team at Online Marketing Academy (OMA) has compiled comprehensive research on AI here: 11 Frameworks That Will Instantly Improve Your AI Prompts.  As we discover what drives results in AI for you, we'll share more findings.