The funding will accelerate research and development, production capacity, and international market expansion for the semiconductor firm. Since its 2018 founding by ECARX and Arm China, SiEngine has functioned as a key silicon provider for ECARX's Antora central computing platforms. Their integrated technology stack, centered on the 7nm Longying I chip, is currently deployed across multiple automotive brands, including Lynk & Co, Geely Galaxy, and FAW Hongqi.

Looking ahead, the company is shifting toward the next generation of hardware with its 5nm Longying II SoC. This new chip integrates native large language model capabilities and advanced AI compute performance, designed specifically for the Flyme Auto OS. By broadening its scope beyond passenger vehicles to include commercial fleets and robotaxi manufacturers, the partnership aims to cover the full spectrum of intelligent driving use cases from L2 to L4. ECARX retains its status as the largest single shareholder, maintaining a vertical integration strategy that now supports 18 global automakers.