On August 13, 2026, Xiaomi officially launched its HyperOS 4, delivering a comprehensive upgrade across three core pillars: foundational experience, feature enhancements, and full-ecosystem AI. The new system introduces a smoother interactive feel, more direct access to needed functions, and the fully integrated Super XiaoAI 2.0, powered by Xiaomi's in-house MiMo large model, all aimed at delivering an experience where "everything flows in one seamless motion." HyperOS 4 will begin rolling out to the first wave of Beta devices starting August 14, 2026, covering the Xiaomi 17 Ultra, Xiaomi 17 Ultra Leica Edition, Xiaomi 17 Pro Max, Xiaomi 17 Pro, Xiaomi 17, the Xiaomi Pad 8 series, REDMI K90 Pro Max, REDMI K90 Pro Max Champions Edition, and REDMI K90, with additional devices receiving the update in phases. At the same time, Xiaomi is inviting Mi Fans to join the "HyperOS Companion Program" to test the Beta and provide valuable feedback.

Three core technical breakthroughs elevate the foundational experience to new levels of fluidity. A smooth and stable base experience is the cornerstone of the entire ecosystem. Over three generations, HyperOS has completed the full evolution of its system kernel, from reconstruction to refinement. The first generation re-engineered the traditional Android kernel into a converged architecture based on Linux and the self-developed Vela, unifying the technology stack across the human-vehicle-home ecosystem. In the following two years, deep micro-architecture-level scheduling and compilation optimizations dramatically improved system energy efficiency. HyperOS 4 aims to give users a consistently silky-smooth experience, building on the "extreme energy efficiency" of its predecessors by pushing core technological breakthroughs deeper into the kernel, striving for a responsive, fluid user experience from start to finish.

HyperOS 4 fully upgrades its load assessment model, using the instruction count at the most fundamental level of task execution as the core metric. It conducts comprehensive problem screening across four major modules: CPU, GPU, memory, and system resource management. Through precise load calculation, HyperOS 4 can accurately pinpoint high-power task processes and perform full-chain problem decomposition, eliminating redundant instructions, abnormal memory usage, and service startup issues generated during system runtime. HyperOS 4 has achieved a comprehensive reduction in system instruction counts across 168 high-frequency user scenarios, with total instructions down 14.4% and a significant boost in system resource response and supply.

Most occasional frame drops users experience in daily use stem from untimely memory supply. HyperOS 4 introduces a new memory preloading mechanism that "remembers" the memory usage of each app at every launch, providing on-demand performance supply. It also dynamically reserves a "memory pool" based on daily usage patterns to precisely meet demands in lag-prone scenarios like app cold starts and screen unlocking. During idle times, such as when apps are exited or the screen is locked, it proactively organizes fragmented memory, ensuring performance can be delivered instantly on the next app cold start. Compared to the past, HyperOS 4 increases available memory by 27.2% after 8 hours of use, ensuring smooth performance even after extended daily use.

To ensure compatibility with the broader app ecosystem, native systems allocate resources uniformly to all application processes: whether rendering a full interface or just reading a background message, the same complete runtime environment must be loaded. Xiaomi's HyperOS application runtime environment is a dedicated application framework built from scratch for first-party apps, solving this very problem. It provides two execution paths for first-party applications, tailored for foreground and background scenarios: the "state-driven UI execution path" operates at 100% machine code execution, outperforming native efficiency, while the "capability-on-demand execution path" completely bypasses the fixed overhead of the native runtime while retaining all essential capabilities required by system apps.

HyperOS 4 has already migrated applications like the desktop and gallery. Xiaomi has not only completely rewritten application code using more efficient programming languages but also built an entire engineering system from the ground up, including architecture design, system frameworks, development tools, debugging facilities, and automated testing. This has passed 100% compatibility verification, and the new programming language fundamentally avoids the transient stutters caused by native garbage collection mechanisms. After the reconstructed desktop, the launch time for 30 consecutive apps after 9 hours of use has dropped by a significant 17.5%, while achieving silky-smooth animations for scenarios like switching horizontal apps on the desktop, suspending horizontal floating windows, rotating windows between portrait and landscape, and switching between portrait and landscape apps. The reconstructed gallery can now scan 10,000 photos with a 90% reduction in time, a 28% decrease in CPU resource usage, and a 32% reduction in memory usage. Even when quickly scrolling through thumbnails, images load instantly without any blank blocks.

With the support of the three new technologies—precise load calculation, memory preloading, and the self-developed application runtime environment—HyperOS 4 has achieved significant advancements in system fluidity. Even under prolonged heavy load, frame drops have decreased by a substantial 28.9%, and the dynamic DOU battery life model test results have improved by 0.26 hours, truly achieving "one seamless motion, fluid to the core."

With meticulous refinement of design and applications, the functional experience now goes directly to what users need. Building on the significantly reduced system load and greatly improved fluidity, HyperOS 4 is able to deliver a more vibrant, life-inspired aesthetic and create a comfortable, intuitive, and natural system experience through usability enhancements in system apps and ecosystem connectivity.

The life-inspired aesthetic is a long-term design philosophy of HyperOS. HyperOS 4 seeks new expressions through "materials," "light and shadow," and "space," introducing a new material called "Frosted Glass." It can perceive environmental colors, present finer visual textures, sense content attributes, and adapt its transparency for optimal readability. It can also perceive interaction behaviors, responding to user actions with dynamic lighting effects. With the Frosted Glass material, the new lock screen supports one-stop adjustments and notification stacking, making personalization more convenient. The new desktop brings richer desktop elements, supports widget stacking and flexible folder resizing, and features a flexible floating framework for more immersive content browsing and clearer functional hierarchy. This delivers a unified and coherent experience across devices, ensuring ease of use on small screens and high efficiency on large screens.

Meanwhile, HyperOS 4 has improved the interaction and capabilities of high-frequency system apps, integrating intelligent features into daily operations. The new AI voice notes can capture inspiration through natural speech in fragmented scenarios like meetings, reviews, and travel, transforming scattered expressions into structured notes, to-dos, meeting minutes, mind maps, and personal knowledge. The new Super XiaoAI input method deeply integrates the large model, understanding semantics and refining wording to generate structured text suitable for the current context, upgrading every input from typing faster to expressing better.

Furthermore, HyperOS 4 has revamped several system applications: the voice recorder can identify meeting scenarios, extract key points, and automatically generate outlines; AI calling can provide reply suggestions based on habits for delivery and courier calls, with support for automatic answering; Xiaomi Dual-Sim supports call and SMS verification code transfer under different network conditions; system security controls now support over 100 third-party applications, and the photo control supports content search. The new integrated device center helps users locate target devices more quickly through clear device zones, supports pinning frequently used devices and scenarios to the top with one tap, and allows switching between device lists of different Mi Home households on the home page.

The full-ecosystem AI has evolved further with Super XiaoAI 2.0 collaborating with users. In April 2026, Xiaomi released its model foundation for the Agent era—the Xiaomi MiMo-V2.5 series—ranking among the global leaders on OpenRouter charts. Based on Xiaomi's self-developed models and AI-driven OS transformation, Super XiaoAI has been comprehensively upgraded to Super XiaoAI 2.0.

At the interaction level, Super XiaoAI 2.0 adopts a new floating interface that displays task status on the Xiaomi Super Island. Users can continue operating their phones while XiaoAI is thinking, and the results automatically expand upon task completion. The new Inspiration Ball achieves synchronization between voice input commands and precise screen understanding—point and XiaoAI sees what you mean. Additionally, Super XiaoAI 2.0 supports one-swipe-up access to view pickup codes, package collection codes, queue numbers, storage codes, and return codes on the Xiaomi Super Island or lock screen.

The new Expert Mode boasts powerful application scheduling and orchestration capabilities. Users can state their needs in a single sentence, and XiaoAI can self-think, self-plan, self-invoke, and self-execute, completing complex cross-app tasks and supporting the execution of repetitive tasks on set schedules. Currently, Super XiaoAI has achieved full integration with system applications and has connected with over 10 third-party developer services, including Alipay and Amap. As the exclusive AI assistant for the full ecosystem, Super XiaoAI 2.0 enables cross-ecosystem, cross-scenario, and cross-device collaborative operations, seamlessly handing off between different devices. For example, users can prepare their car with a single sentence before heading out or generate a Mi Home automation scenario with one command. Using Expert Mode consumes Super XiaoAI points. Once the free quota is exhausted, users can continue by subscribing to a personal plan and selecting an appropriate tier.

Super XiaoAI 2.0 also adds a "Cloud Office Suite," capable of completing deep research, PPT creation, web page generation, video generation, and other content generation tasks that were previously difficult to perform on a phone, instantly turning the device into a "portable computer." Furthermore, with the update to the Xiaomi Interconnect Services app, Mac and third-party Windows computers can also invoke Super XiaoAI 2.0's Expert Mode, achieving unified memory and task handoff between phone and computer, ensuring "one XiaoAI, everywhere."

Security and privacy are fundamental principles of HyperOS. Xiaomi employs an end-to-end privacy computing system to ensure user data is only used to execute tasks. When the screen is locked, Super XiaoAI will not answer questions involving personal privacy. Users can view, manage, and delete memory content at any time. Regarding permission management, users can centrally manage Super XiaoAI's access authorization to apps and data in the settings.

At the same time, Xiaomi has deeply participated in the research and development of Beijing's Tongming Lake Lingji OS and has applied a significant amount of research results in HyperOS 4, including system-level agent runtime frameworks, capability transformation mechanisms, cross-device intent collaboration, perception and memory engines, and security governance systems. Lingji OS is positioned as an agent operating system framework, providing four key capabilities centered on "connectable, actionable, manageable, and stable." This helps HyperOS 4 further enhance intent understanding, task organization, cross-device collaboration, and continuous service capabilities in "human-vehicle-home full ecosystem" scenarios, boosting its technological leadership and ecosystem capacity as a next-generation intelligent terminal operating system.

Recruitment for the first wave of Beta devices is now open, with more devices to follow. HyperOS 4 will begin rolling out to the first batch of Beta devices starting August 14, 2026, covering the Xiaomi 17 Ultra, Xiaomi 17 Ultra Leica Edition, Xiaomi 17 Pro Max, Xiaomi 17 Pro, Xiaomi 17, the Xiaomi Pad 8 series, REDMI K90 Pro Max, REDMI K90 Pro Max Champions Edition, and REDMI K90, with more devices receiving the update gradually. For details on supported devices and specific plans, please continue to follow announcements on the Xiaomi official website and Xiaomi Community.

HyperOS 4's fluid-to-the-core foundational experience, feature upgrades that get straight to the point, and the collaborative Super XiaoAI 2.0 represent a new exploration by Xiaomi in user experience and full-ecosystem AI. It is an important step, centered on people, toward a complete AI ecosystem. The launch of HyperOS 4 is expected to bring a brand-new system experience of "everything in one seamless motion" to all users across Xiaomi's ecosystem.