Technology 12/12: Xiaomi launches new phone, OpenAI releases GPT-5.2

Xiaomi launches Redmi 15 5G in Vietnam.

On December 12th, Xiaomi introduced the Redmi 15 5G in the Vietnamese market. This smartphone, priced around 5 million VND, stands out with its 5G connectivity, NFC support, and many other modern features.

The device is equipped with a 7000mAh Silicon Carbon battery, providing over two days of usage time. Additionally, it supports 33W fast charging and 18W reverse charging, offering convenience during use. In terms of performance, the Redmi 15 5G uses a Snapdragon 6s Gen 3 chip, combined with expandable RAM up to 16GB, optimizing multitasking capabilities and ensuring high connection speeds.

The REDMI 15 5G phone model is aimed at budget-conscious consumers. (Source: Xiaomi)

The phone runs on the HyperOS platform, integrating many AI features such as Circle to Search and Google Gemini, providing a smarter user experience. The device has a 6.9-inch FHD+ screen with a 144Hz refresh rate, and also supports Dolby Atmos® and Hi-Res Audio, delivering vibrant display and sound quality.

In terms of cameras, the Redmi 15 5G boasts a 50MP AI dual-camera system with intelligent editing tools, along with an 8MP front camera for selfies. The product is available in three color options: Blue Wave, Titanium Gray, and Midnight Black.

OpenAI launches GPT-5.2 to compete with Gemini.

OpenAI officially announced GPT-5.2, the latest version of its artificial intelligence model family, after CEO Sam Altman initiated a "code red" status to accelerate development in response to competition from Google Gemini 3.

According to the announcement, GPT-5.2 brings improvements in general intelligence, programming capabilities, and long-term context handling. The new model is expected to create more economic value for users, thanks to its ability to support spreadsheet creation, presentation building, and handling complex multi-step projects.

Notably, Disney announced a $1 billion investment in OpenAI and allowed the startup to use characters from Star Wars, Pixar, and Marvel in its Sora AI video creation tool.

OpenAI has confirmed that it will continue to maintain GPT-5.1, GPT-5, and GPT-4.1 versions on its API. Meanwhile, GPT-5.2 will be implemented directly within ChatGPT with three plans: Instant, Thinking, and Pro, starting with the paid plans.

Google tests AI Disco browser with GenTabs

Google has just introduced Disco, a new experimental browser developed by the Chrome team. Disco's unique feature is GenTabs, which allows users to enter a request and instantly receive multiple related tabs along with a small, automatically generated web application.

For example, when a user wants to plan a trip to Japan, Disco not only opens reference websites but also creates a planning app with maps, itineraries, and resource links. GenTabs is built on the capabilities of Gemini 3, Google's new AI model, which can create interactive interfaces instead of just returning text or images.

Disco wasn't created to replace Chrome, but rather to test GenTabs, an artificial intelligence (AI)-based approach to web usage. (Source: Google)

Disco also encourages users to open additional tabs to gather more information, allowing GenTabs to update and refine the application based on the new data. This creates a collaborative loop between the user, web tabs, and AI, rather than relying solely on the chatbot.

Beyond travel, Disco can also assist in many other situations, such as explaining medical knowledge, planning a move, or creating cost calculation tools. However, Google still considers this a test in Search Labs, and it's not yet determined whether Disco will become an official product or just an add-on feature for Chrome or other applications.