If you use the Free ChatGPT, you’ll start with the GPT-4o model. If GPT-4o isn’t available or you reach your limit, your account will automatically switch to GPT-4o mini. Do you have a paid ChatGPT plan (Plus, Pro, Team, or Enterprise)? You can choose from several powerful AI models! But with so many options, how do you pick the best one for your specific task? Choosing the right AI model is like picking the right tool for a job.

ChatGPT offers a selection of models, each with its own strengths. Here’s a simple look at what each model is and why you might choose it:
- o3: This is the smartest model for thinking through tough problems. It’s really good at things like writing computer code, solving math problems, understanding science, and looking at pictures. You’d pick this for very complex questions where you need deep analysis.
- o4-mini: This model is quick and doesn’t cost much to use for thinking tasks. It’s especially good with math, coding, and image-related tasks. It’s a great choice if you have a lot of questions that need some thinking, but you also want speed and efficiency.
- GPT-4.5: This model is better at spotting patterns, connecting ideas, and coming up with new and creative thoughts. It’s helpful for things like making your writing better, writing computer programs, and figuring out how to solve everyday problems.
- OpenAI o1 and o1-mini: These models are built for tackling really hard problems. Think of them for challenging tasks in research, planning, coding, math, and science.
- OpenAI o3-mini: This model is excellent for coding and other advanced thinking tasks. It’s a good mix of being fast, efficient, and flexible for different jobs.
- GPT-4o: This is OpenAI’s top model. It can understand and talk about sound, pictures, and text all at the same time, in real-time.
- GPT-4o mini: This is the quickest model available. It’s perfect for everyday tasks where you just need a fast answer.
For More Details: https://help.openai.com/en/articles/7864572-what-is-the-chatgpt-model-selector