- ChatGPT now uses a simplified model selector that can automatically switch between different AI models.
- Users may not realize that different cues can trigger different underlying models.
- Additional models and controls are hidden in settings most never access
Don’t worry, you’re not crazy, ChatGPT’s model selector (at the top of the screen) looks a little cleaner this week, with fewer model names cluttering the interface.
Forget model names like 5.4, 4o and o3, that’s a thing of the past! ChatGPT Plus subscribers will now see just three options, labeled Instant, Thoughtand Pro. However, the suggestion of transparency over complexity is not exactly what it seems.
The update changes the nature of ChatGPT options from a selection of templates to a broader style request. ChatGPT will most often decide the actual model used in a response based on the complexity of your request and other settings.
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Those factors will affect whether ChatGPT responses come from a faster, lighter model or a more powerful, power-hungry LLM. You may not even be told which one handled your request in the result.
It puts control of ChatGPT one step beyond the user. Selecting a ChatGPT model used to mean just that. Now, selecting any of the three modes can correspond to any of ChatGPT’s stable models, depending on other elements.
You may get answers almost instantly in short conversational form. Or there could be a pause and a longer, more structured response. That difference is not just the tone. It reflects how much computational effort the system has decided to spend.
Model change
The change is not random; helps OpenAI solve a real problem. Although powerful, more advanced AI models are also slower and more expensive to run. Using them for every request would make your ChatGPT experience slow and expensive.
OpenAI can offer something that looks fast and capable when mixing the models.
On the other hand, it generates less predictable results. Two people using ChatGPT at the same time may not be using the same underlying system, even if their screens appear identical.
One person may be directed to a lighter model and another to a heavier one, based on subtle differences in their indications or usage patterns. The result is an experience that can vary in ways that are difficult to explain from the outside.
You may not even know all the models available on ChatGPT anymore. They’ve been hidden in the settings menu, hidden in settings that most people never open.
That’s where legacy models can still be accessed and where automatic shifting can be disabled. You can even adjust how much effort the system applies when reasoning.
Take back control
For casual users, this probably doesn’t matter much. The experience feels more fluid. You write something, you get a response, and it generally works. The system takes care of the details.
For more attentive users, the change can be a bit disorienting. If ChatGPT suddenly seems less detailed or more hesitant, it may have switched to a different model without telling you. In some cases, usage limits can trigger this type of change, silently degrading the level of reasoning applied to your prompts.
That creates a small but noticeable gap between expectations and reality. Many people assume that they are interacting with a single, consistent intelligence. In truth, they are interacting with a flexible system that is constantly adjusting.
This approach works because it eliminates friction. Most people don’t want to manage settings or learn the nuances of different models. They want results. But when you no longer choose the model directly, you also give up some influence over how your response is generated. This is not relevant for everyday questions, but can be important when precision or depth becomes important.
If you want to make sure which model you are using, click on the model selection menu and then look in the Set up configuration. Inside you will see a Model selector.
The next phase of AI may not be choosing the smartest model. It may be about understanding when and why the system chooses for you. And if you want to regain control, the answer lies in a settings menu that most people never open.
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