How to Use Different ChatGPT Models For Beginners (2025)

In the rapidly evolving landscape of artificial intelligence, understanding the various AI agents available can significantly enhance productivity and creativity. In this article, we'll explore the different models offered by OpenAI, including GPT-4o Mini, GPT-4o, GPT-4.5, O3, and others, highlighting their unique features and ideal use cases. By the end, you'll have a solid grasp of which model to use for specific tasks, making it easier to integrate these AI agents into your daily workflow.

1: Understanding GPT-4o Mini – Your Fast Everyday Assistant

Let's kick things off with the smallest model, GPT-4o Mini. This model is designed for speed and efficiency, making it perfect for everyday tasks that require quick answers without the need for deep reasoning. Whether you're looking to settle a debate or need a fast fact check, GPT-4o Mini can handle it with ease.

One of the standout features of GPT-4o Mini is its ability to operate without the risk of rate limiting. This means you can interact with it all day without interruptions, making it a reliable tool for quick queries. For instance, if you're curious about whether chocolate is okay to be refrigerated or not, you can ask GPT-4o Mini, and it will provide you with a swift and accurate answer.

Its primary use cases revolve around customer support automation, where speed and quality are crucial. Businesses often integrate this model into chatbots and virtual assistants to handle high volumes of customer enquiries effectively.

Key Features of GPT-4o Mini

• Fast response time for simple queries.
• Ideal for customer support automation.
• Cost-efficient and scalable.

2: Exploring GPT-4o – The All-Rounder

Next up is GPT-4o, a versatile model that excels at a wide variety of tasks but doesn't particularly specialise in one area. Think of it as your go-to assistant for general tasks. Whether you need to write an essay or brainstorm ideas for a video script, GPT-4o can do it all.

One of the reasons this model is so popular is its ability to generate content that is visually appealing and easily digestible. For example, if you ask it to explain blackholes to a twelve -year-old, it will present the information in a way that is both engaging and easy to understand.

Additionally, GPT-4o is well-equipped for generating emails and translating text. If you're looking to draft a professional email, this model can help you create a well-structured message that conveys your thoughts clearly.

Key Features of GPT-4o

• All-round capabilities for various tasks.
• Generates visually appealing content.
• Good at translating and generating emails.
• Improved layout of results.
• Advanced vision capabilities.

3: Delving into GPT-4.5 – The Emotionally Intelligent Writer

Moving on, we have GPT-4.5. This model stands out due to its improved emotional intelligence, making it ideal for writing tasks that require a human touch. If you’re involved in creative writing or professional communication, this is the model you should consider.

GPT-4.5 excels at producing empathetic and polished responses, making it suitable for crafting persuasive texts. However, it’s important to note that this model is slower than its predecessors, so if you need something done quickly, you might want to stick with GPT-4o or GPT-4o Mini.

This model is particularly effective for drafting social media posts, persuasive emails, and any content that requires a nuanced understanding of tone and context. Its ability to minimise hallucinations also makes it a reliable choice for factual accuracy.

Key Features of GPT-4.5

• Exceptional emotional intelligence.
• Ideal for creative writing and persuasion.
• Produces less hallucination, ensuring factual accuracy.

4: Unpacking O3 – The Advanced AI Agent

Now, let's discuss O3, a model that many people don't really understand. O3 is not just a chatbot; it’s an AI agent that can perform tasks for you, conduct research, and provide detailed reports. This makes it one of the most powerful tools in the AI landscape.

One of the exceptional features of O3 is its ability to analyse images in a way that previous models couldn't. For instance, if you provide it with a vague image of a location, O3 can zoom in, crop relevant parts, and even cross-reference the image with online data to give you an accurate identification of the place.

This model is particularly beneficial for business analysis, as it can gather data from various sources and provide insights with remarkable accuracy. If you're looking to forecast trends or conduct complex analyses, O3 is the model to use.

Another great use is it's ability to research a person. Try asking o3 to find out all the information it can on you, and you'll be surprised at what it can find, even from two decades ago.

Key Features of O3

• Advanced image analysis capabilities.
• Can perform complex business analysis.
• Utilises online data for accurate insights.
• Strong research capabilities.

5: Understanding o4-mini-high – The Math Specialist

Last but not least, we have o4-mini-high. This model is specifically designed for mathematical problems and coding, making it ideal for users who need help with complex calculations or data analysis.

o4-mini-high excels in solving difficult mathematical prompts and can generate synthetic data for business scenarios. If you're running a business and need to calculate profits or operating costs, this model can provide quick and accurate solutions.

Its training using reinforcement learning allows it to pursue effective chains of thought when tackling mathematical problems, making it a valuable tool for anyone dealing with numbers.

Key Features of o4-mini-high

• Specialises in solving complex mathematical problems.
• Generates synthetic data for business scenarios.
• Utilises reinforcement learning for effective problem-solving.
• Great as a coding assistant.

6: Comparing o3 and Deep Research

Another important aspect to consider is the difference between o3 and the Deep Research feature. While both can provide in-depth research reports, o3 functions as an AI agent that can perform various tasks, whereas Deep Research is more streamlined for quick queries.

For example, if you need to conduct extensive research on your industry trends predicted for the next 5 years, you could use either o3 or Deep Research. However, o3 will likely take longer as it engages in a more comprehensive analysis, while Deep Research will provide quicker, albeit less detailed, results.

Key Differences Between O3 and Deep Research

• o3 functions as an agent performing multiple tasks.
• Deep Research is designed for quick, focused queries.
• o3 can take longer due to its in-depth analysis.

ChatGPT Models FAQs

Conclusion

In summary, understanding the different AI agents available through OpenAI can greatly enhance your productivity and creativity. From quick everyday tasks with GPT-4o Mini to advanced analyses with O3, each model has its unique features tailored for specific needs. By leveraging these tools effectively, you can streamline your workflow and unlock new possibilities in your personal and professional life. So dive in, explore these models, and see how they can transform the way you work!