Xiaomi is poised to unveil its self-developed 3nm system-on-chip (SoC), the Surge Xuanjie O1, marking a significant milestone in the company’s semiconductor ambitions. Announced by founder and CEO Lei Jun via social media, the chip is positioned as a flagship product and a symbol of Xiaomi’s 15-year anniversary. The launch signals the company’s renewed commitment to achieving technological self-reliance and advancing into the upper echelons of premium smartphone performance.
The Xuanjie O1 represents Xiaomi’s return to in-house SoC development after an eight-year hiatus. It also reflects more than a decade of investment and experimentation in semiconductor design, starting with the establishment of its chip subsidiary, Pinecone Electronics, in 2014.
A Long-Term Strategy Rooted in Persistence
Xiaomi’s first in-house SoC, the Surge S1, was released in 2017 and featured a 28nm, 64-bit octa-core design. While it positioned Xiaomi as the fourth smartphone company globally—alongside Apple, Samsung, and Huawei—to develop its own chips, the Surge S1 saw limited commercial adoption, appearing only in the mid-range Mi 5C model. The planned follow-up, Surge S2, was never officially launched, leading to industry speculation about the future of Xiaomi’s chip strategy.
Following internal setbacks, Xiaomi restructured its semiconductor efforts in 2020. The company diversified its approach, integrating R&D with strategic investments and founding Dayu Semiconductor in Nanjing to focus on AI and IoT chips. These efforts laid the groundwork for renewed development across multiple technical domains.
By 2021, Xiaomi began releasing a series of specialized “small chips”:
· The Surge C1, an image signal processor (ISP), launched in March 2021 and debuted in the MIX FOLD foldable phone.
· The Surge P1, a custom fast-charging controller, was introduced in December 2021, delivering industry-first resonant charging performance. It enabled rapid charging of a 4600mAh battery in just 18 minutes and debuted on the Xiaomi 12 Pro.
Meanwhile, Xiaomi strengthened its organizational infrastructure to support semiconductor expansion. In December 2021, it established Shanghai Xuanjie Technology Co., Ltd. with a registered capital of RMB 1.5 billion. A second entity, Beijing Xuanjie Technology Co., Ltd., was registered in 2023 with capital raised to RMB 3 billion, further underlining Xiaomi’s commitment to chip development.
In public statements, Xiaomi executives, including Group President Lu Weibing, have emphasized that the company remains committed to its chip strategy, acknowledging the long-term, resource-intensive nature of semiconductor R&D.
A Decade-Long Commitment and RMB 50 Billion Investment Plan
The Surge Xuanjie O1 is the culmination of a four-year internal project that embodies Xiaomi’s ambition to produce a high-end, cutting-edge SoC. According to Lei Jun, the chip was designed from the outset with ambitious targets: a leading-edge process node (3nm), flagship-scale transistor count, and first-tier performance and efficiency.
Xiaomi has committed to investing at least RMB 50 billion (approximately USD 7 billion) over a decade into chip development. As of April 2025, the company has already invested RMB 13.5 billion (USD 1.87 billion) into the Xuanjie project. Its R&D team now exceeds 2,500 engineers, with planned investment for 2025 expected to surpass RMB 6 billion.
In terms of both financial commitment and team size, Xiaomi’s chip division is believed to be among the top three domestic design efforts in China.
Lei Jun stated that the decision to pursue flagship SoCs—rather than mid-range or low-power chips—was a strategic one, driven by the need to master high-end semiconductor technologies that support Xiaomi’s broader premiumization strategy.
He also acknowledged the challenges ahead, noting that Xiaomi’s chipmaking journey is still in its early stages compared to more established industry players. He called for patience and support as the company continues its long-term push toward technological self-sufficiency.
