What’s new and what improvements are there in the new version of the ChatGPT model with two personalities

Let’s tell you What’s new in GPT-5.1the new version of the model artificial intelligence of ChatGPT. GPT versions are the engine of your interactions with OpenAI’s AI, and the results that are given to you and the way in which they are told to you depend on them. This new update stands out above all for having two versions with different personalities. But in addition to this, there are also other new features that go more under the hood, but that can also make a difference when it comes to serving you the answers. Here, you must be clear that this new version of GPT-5.1 It has reached paying users firstwhether they have a Plus, Pro, Go or Business subscription. Maybe later it will also reach free users, but probably with limited use. Two GPT-5.1 with two ways to respond As we have told you, the main novelty of this new update is that it offers two versions with different personalities. This goes beyond customize ChatGPT with different personalities as you can do in the settings, but there are directly two versions of GPT-5.1, and each of them has a different type of response. On the one hand it is GPT-5.1 Instantwhich is more conversational and with more “warm” or close responses. and then you have GPT-5.1 Thinkingthat use clearer language with less jargon. This last model is trained for deep reasoning, and responds faster on simple tasks, while dedicating more thinking time to complex ones. Paid ChatGPT users will see the ChatGPT 5.1 model activated at the top. By clicking on the name the model selector will open, and in it you can choose between the variants instant and thinking. There is also a way Car which will choose for you which of the two variants to use depending on what you ask in the prompt. Smarter adaptive reasoning GPT-5.1 also improves its internal logic, and now dynamically decides the “thinking time” that you dedicate to a request. Come on, instead of dedicating the same time to each of them, you will dedicate different times depending on the type of request. This way, when you make a simple query it will be processed with minimal calculation and faster, while more advanced reasoning tasks receive additional layers of analysis to improve the results and make them more coherent and context-sensitive. Behavioral improvements and instructions This new model too improves following instructionsbetter “understanding” what you ask and generating responses that are more aligned with it. Each of the two variants adjusts its reasoning to the complexity of the request to ensure that the answers are consistent with everything you ask of them. Better tone and personality controls We already told you that ChatGPT has a setting to determine the tone and personality of the responses. Now, instead of having predefined ringtones the user can configure it. For example, you can choose to make it professional, friendly, or efficient, and apply it consistently across all interactions. For regular users this simply helps you be more comfortable with the answers it gives you. But for companies it is even more important, since you can align the tone with what you want to use both in your communications with customers and in internal documentation. Context retention improvements Context retention is more effective, which improves continuity in long interactions and with multiple shifts. This will help you as a user, but it is especially important in the business environment, in uses such as customer service or knowledge base systems. Performance optimization Response generation is now faster, and token overhead is reduced to make GPT-5.1 a better model for automated environments. It can deliver higher quality or better results using fewer tokens than previous models, reducing the overall costs of using the API. In Xataka Basics | The best prompts to save hours of work and do your tasks with ChatGPT, Gemini, Copilot or other artificial intelligence

OpenAI has released GPT-5.1 with two personalities because 800 million users do not want the same AI

OpenAI has launched GPT-5.1an update of its flagship model that comes in two variants: Instant (conversational and “warmer”), Thinking (deep reasoning). The real novelty is not in the technical metrics, but in something more prosaic: you can now choose between eight conversation tones, from “professional” to “cynical.” It is recognizing that AI as a mass product needs segmentation. It is no longer enough to have just one assistant for everyone. The new model selector for Plus users. Image: Xataka. Why is it important. OpenAI has 800 million users with radically different expectations. Some want a neutral and efficient assistant. Others seek warmth and empathy. Some have even developed problematic emotional ties to the chatbot. The company tries to solve this with personality adjustments, but the underlying problem remains: ChatGPT keeps pretending to be a person, a consistent entity that knows you. This generates the same risks of emotional dependence that have motivated mental health demands and alerts. The facts: GPT-5.1 Instant improves in math and programming, and for the first time uses “adaptive reasoning”: decide when to think harder before answering. GPT-5.1 Thinking, for its part, dynamically adjusts its processing time according to the complexity of the question, being twice as fast in simple tasks and twice as slow in complex ones. The eight available tones (Default, Professional, Friendly, Sincere, Quirky, Efficient, Geek, Cynical) work by injecting different instructions into each prompt. The capabilities of the model do not change, only the presentation changes. Yes, but. The speed of the launch has come at a cost. OpenAI itself admits in its technical documentation that GPT-5.1 presents “known security regressions” compared to the October version. They prioritized time-to-market over exhaustive testing, something striking in a company under intense regulatory scrutiny due to cases of vulnerable users. Furthermore, personalization has limits that OpenAI has had to explicitly acknowledge: “taken to the extreme, personalization would be useless if it only reinforced your worldview.” It is admitting that you are walking a tightrope between engagement commercial and social responsibility. Between the lines. The launch of GPT-5.1 is a symptom of a deeper strategic shift. OpenAI is fragmenting its product because the “one AI fits all” model has failed. GPT-5 was so disappointing that the company had to enable it again GPT-4o as an option the next day. In Xataka | OpenAI has never been more ambitious. And he’s never been so close to not being able to pay his debts. Featured image | Xataka with Mockuuups Studio

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