OpenAI continues its quest to be the number one reference in terms of artificial intelligence. In addition to launching ChatGPT Atlas last month, recently introduced GPT-5.1. This is an update based on the ChatGPT 5 version and which not only improves the intelligence of its model, but also introduces a fascinating feature.
Let’s talk about it two different versions with different personalities and approaches. This evolution responds to a clear request from users: that AI is not only intelligent, but also pleasant to talk to. Below, we leave you all the details.
GPT-5.1 splits into two personalities
Instead of a single model, GPT-5.1 is divided into two main variants. On the one hand we find Instant GPT-5.1the most used template, which by default is warmer and more conversational. Second OpenAIin the initial tests he surprised by demonstrating touches of ingenuity and a playful nature, without sacrificing the clarity and usefulness of his answers.
The highlight is that, for the first time, this model can use a adaptive reasoning to decide when you need to “think” before answering more challenging questions. This translates to more precise and detailed answers in areas such as mathematics and programming, maintaining its characteristic speed in simple queries.
On the other hand there is GPT-5.1 Thinking, the version designed for advanced reasoning. This model has become more efficient and easier to understand in daily use. Its main improvement lies in precisely adjust your reflection time to the complexity of the issue.
This means this You will devote more mental resources to complex problemsoffering more complete solutions, responding promptly to the simplest requests, avoiding unnecessary waits. Furthermore, their answers are now clearer, with less technical jargonmaking this very capable model more accessible to all. Its default tone is also warmer and more empathetic.
An automatic mode makes your life easier
For most users, it will not be necessary to manually choose between these two personalities. The mode Automatic GPT-5.1 will continue to be responsible for directing each query to the most appropriate model based on user requests. What would become evident is that the answers in general are smarter and your tone will be more natural.
This update is accompanied by a Really useful customization ability. OpenAI has refined the controls so you can shape ChatGPT’s tone more intuitively and effectively.
Beyond the predefined styles such as “Professional”, “Sincere” or “Quirky”, we are experimenting granular adjustments which allow you to directly define how concise, warm or frequent you want the assistant to use emojis. The best thing is these changes in customization apply immediately to all conversationsincluding those already underway.
It seems that this novelty will be exclusive to Paid versions of ChatGPT (Plus, Pro, Go or Business plans), at least for the moment. If it lands on free versionit will most likely do so with some limitations.
