GPT-5.1 adds personality controls, improved reasoning, and compatibility with Atlas
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OpenAI has launched GPT-5.1, an update that enhances ChatGPT's performance and allows users to adjust the personality of responses with unprecedented precision. The model is available first to paid users and targets both everyday use and demanding corporate environments.
The main innovation is that users can choose between two interaction styles, making this version the most flexible and customizable to date. It also introduces notable improvements in reasoning, context retention, and response speed.
El salto más grande desde GPT-4
GPT-5.1: two models designed for every type of query
Media outlets emphasize that GPT-5.1 incorporates a selector that allows users to choose between two different modes. GPT-5.1 Instant offers a warmer, more conversational style, ideal for smooth interactions. GPT-5.1 Thinking prioritizes deeper reasoning and clear answers, without unnecessary technicalities.
For the first time, users can choose manually or let the system decide which mode to use based on the complexity level of the query.
A leap in reasoning and instruction following
GPT-5.1 introduces a "reflection time" system that automatically adjusts how much depth to dedicate to analysis. Simple questions are solved quickly; more complex ones receive additional layers of reasoning.
GPT-5.1 introduce un sistema de “tiempo de reflexión”
The model also improves instruction following, responding more closely to users' specific requests. This optimizes long or precise tasks, where previously deviations or ambiguities could occur.
Greater context retention and coherence in extended conversations
The update incorporates stronger context retention, useful for those who hold extended sessions or need coherence across multiple turns. Specialized media highlight that this is key for companies with customer service flows or knowledge management.
GPT-5.1 permite elegir un tono profesional, amistoso o eficiente
Advanced tone and consistency control for businesses
GPT-5.1 allows users to choose a professional, friendly, or efficient tone, applying it uniformly across all responses. This feature is aimed especially at businesses that need to maintain a consistent communication style with their clients.
Response speed and token usage have also been optimized, reducing operating costs for those who integrate the model into their own systems.
Atlas: the browser powered by ChatGPT
Another highlight is the arrival of ChatGPT Atlas, the browser that incorporates AI directly into its address bar. Users can type queries or instructions and receive contextual responses without leaving the current page.
Atlas allows users to choose between sending the query to ChatGPT or using a traditional search. The screen is divided into tabs that display AI results, Google results, and content filtered by images, videos, or news.
