Tencent Unveils OS-Level AI Assistant Marvis with Cross-Device Control and Local Privacy Mode

On May 20, Tencent announced the official release of Marvis, an operating system-level AI assistant now available for download on the official website (Marvis.qq.com) with no invitation code required. Beyond standard AI agent capabilities, Marvis offers more intelligent system and file management, safer switching between on-device and cloud computing, lower barriers to using agent services, and smoother cross-device collaboration, all built on a deep understanding of computer systems, computing power, files, applications, and other information.

Unlike traditional AI conversation tools or single-application agents, Marvis is built around the "operating system level." It integrates the terminal system, files, applications, computing power, and cross-device connections into a single AI intermediary layer: users no longer need to remember setup entry points, file paths, or software operation steps. They simply state their goal in one sentence, and Marvis understands the task, breaks it down into steps, calls the appropriate agent to execute, and hands over to the user for confirmation at key moments such as privacy, security, and payments.

Operating System-Level Understanding: Making Computers Smarter

Marvis turns the entire computer into a "smart object" that can access the system level directly, enabling true closed-loop control from system settings to data processing. With a single sentence, users can call up, find, and adjust Windows system settings: they can ask about computer configuration, battery health, or network status, or let Marvis check whether hardware can run a game smoothly. They can also adjust system settings, optimize startup items, and clean up redundant files through chat.

For novice and elderly users, this lowers the barrier to system settings and troubleshooting; for office users, it turns scattered configuration, retrieval, and processing tasks into a more convenient entry point.

Building on this, Marvis combines multiple local models to understand files, allowing users to search file and image content, recognize text within images, and offers features like AI photo albums and AI document libraries organized by people, content themes, holidays, and locations. This helps users create a personalized knowledge base and solves the problem of not finding files when you can't remember the filename.

On security boundaries, Marvis establishes an L2-level safety mechanism that enforces a "hard inquiry": sensitive actions such as deleting or modifying files and adjusting core system configurations first present an execution plan and request user confirmation; higher-sensitivity actions like payments must be completed by the user themselves.

Optional On-Device Models: Data Stays on Your Computer, No Cloud Upload

Marvis offers two working modes: "Efficiency Mode" and "Privacy Mode," allowing different users to choose based on the task nature and hardware configuration. For daily tasks, Efficiency Mode uses a combination of on-device and cloud processing: complex problem understanding and planning can use cloud models, while file processing, execution actions, and local indexing are handled on the device as much as possible for faster response and a more stable experience.

"Privacy Mode" uses only on-device models, ensuring all data parsing, image recognition, and conversations happen locally without uploading to the cloud. This meets the needs of scenarios with high data security requirements, such as finance, legal, and HR. Even without internet access, it can still be used normally.

This device-cloud collaboration isn't simply a choice between "local or cloud" but breaks tasks into different levels: tasks that can be completed locally are processed locally, and cloud capabilities are only called when necessary. Thanks to extensive on-device preprocessing, Marvis significantly reduces cloud token consumption for tasks like image search and file understanding, lowering usage costs and minimizing unnecessary data transfers.

Multiple Preloaded Agents: Get to Work Right Away

Most mainstream agent products require users to set up workflows or configure skills manually before use. Marvis comes pre-installed with a multi-agent collaboration system.

An "AI team" of six agents is available 24/7: the main agent handles overall coordination, understands needs, breaks down tasks, and schedules other agents to complete them; the File agent acts as a digital asset manager, handling file searches, reading, editing, generation, and format conversion; the Computer agent functions as a Windows system maintenance specialist, managing low-level configurations and automation; the App agent handles application operations, calling apps and .exe applications on the computer; the Browser agent serves as a web interaction specialist, taking over web pages for interaction and data scraping; the Search agent is an expert in web searching and information aggregation, quickly locating answers from public resources and providing key citations. Users can issue a single instruction, and multiple agents can process in parallel, displaying progress and results through execution logs and output areas.

This "preloaded multi-agent mode" lowers the learning curve for users. For example, users can ask Marvis to find the latest quarter's invoices and organize them into a table in chronological order; they can also have it monitor flight prices regularly, track updates on a specific website, or organize materials for multi-platform publishing.

Visual Cross-Device Control: More Convenient Collaboration

Marvis has powerful cross-device capabilities, supporting multiple platforms including Windows, Mac, iOS, and Android, with account synchronization across devices: users can directly view and take control of their computer screen from their phone, and even unlock and control the PC remotely while it is locked. Tasks that can be done on the computer can also be done remotely via the phone, creating a personal computer you can carry with you. Unlike most products that are limited to "remote commands," Marvis provides real-time visual control at the desktop level.