Xiaomi to Unveil Its Most Advanced Flagship Yet – The Mi 15S Pro with In-House Xuanjie O1 Chip
Xiaomi has officially announced the launch date for the Mi 15S Pro, its upcoming flagship smartphone and the first to be powered by the company’s self-developed 3nm Xuanjie O1 processor. The highly anticipated device is set to debut on May 22 at 7:00 PM, marking a major milestone in Xiaomi’s 15-year journey in the smartphone industry.
This launch not only celebrates Xiaomi’s anniversary but also underscores its growing ambitions in chip innovation and self-reliance in core technologies.
Xuanjie O1: Xiaomi’s First 3nm Flagship Chip
The Xuanjie O1 chipset—developed entirely in-house by Xiaomi—is a cutting-edge 3nm processor. It was officially unveiled just days ago, signaling Xiaomi’s bold entry into the elite league of chipmakers alongside Apple and Samsung.
According to Lei Jun, founder and CEO of Xiaomi, the company has poured over 13.5 billion yuan (approx. $1.87 billion) into Xuanjie’s R&D to date, with an additional 6 billion yuan expected to be invested this year alone. Xiaomi now has a dedicated chip team of over 2,500 engineers, showing its commitment to hardware independence and next-gen performance.
Xiaomi 15S Pro Specifications: What We Know So Far
Though the official specs are still under wraps, several certifications and leaks have given us a glimpse into what the Xiaomi 15S Pro will offer.
Key Highlights:
- Processor: Xiaomi’s in-house Xuanjie O1 3nm chip
- Charging Speed: 90W fast charging (certified by China’s 3C authority)
- Connectivity: Supports Ultra-Wideband (UWB) technology
- Performance:
- Geekbench 6.1 Scores:
- Single-core: 2709
- Multi-core: 8125
These results outperform the Snapdragon 8 Gen 3, suggesting top-tier speed and efficiency.
- Geekbench 6.1 Scores:
- Model Number: 25042PN24C (associated with both MIIT and Geekbench listings)
The motherboard code “O1_asic” seen in the Geekbench database is believed to represent Xiaomi’s proprietary SoC—further validating that the Xiaomi 15S Pro will indeed run on the Xuanjie O1 chipset.
Strategic Leap: Xiaomi’s Foray Into Chip Design
With the launch of the Mi 15S Pro, Xiaomi is making a strategic leap toward vertical integration—similar to what Apple has achieved with its A-series and M-series chips. This move allows Xiaomi to control the entire hardware-software stack, enabling deeper optimization, enhanced AI capabilities, and a more seamless user experience.
Moreover, this development strengthens Xiaomi’s resilience in the face of global semiconductor supply chain challenges, allowing for more flexibility and innovation in future devices.
Expected Features and Innovations
While detailed specs like display size, camera configuration, and storage variants are yet to be revealed, here’s what we can reasonably expect from the Xiaomi 15S Pro based on its flagship positioning:
- Premium OLED Display with high refresh rate (likely 120Hz)
- Advanced Camera System, possibly co-engineered with Leica
- AI-Optimized User Experience, leveraging the custom chipset
- Sleek Design with Xiaomi’s signature minimalist aesthetic
