Chinese Startup StepFun Unveils STEPX Neo Smartphone Built Around AI Agents
StepFun has launched the STEPX Neo smartphone for 3,999 yuan, replacing traditional app setups with a deeply integrated operating system AI agent.

Artificial intelligence startup StepFun has officially introduced its flagship STEPX Neo device, presenting a novel architecture that positions an AI agent smartphone at the very foundation of the mobile user experience. According to reporting from Decrypt, pre-orders opened across China at a retail price of 3,999 yuan, targeting consumers interested in next-generation hardware designs.
Unlike conventional smartphones that treat artificial intelligence software as standalone third-party applications, the STEPX Neo embeds the intelligent agent directly into its core operating system. This native architecture allows the device to manage complex cross-functional tasks, automate multi-step device workflows, and coordinate user actions autonomously rather than forcing users to manually launch and switch between independent apps.
The launch occurs during an intense wave of hardware experimentation, as global technology firms race to redefine personal computing through generative intelligence. While several international attempts at standalone AI gadgets have encountered mixed reviews and software limitations, StepFun is betting that integrating agentic models into traditional smartphone form factors offers higher utility and better consumer retention.
Hardware reviewers and industry analysts are closely evaluating how the device handles daily reliability, system latency, and consumer battery consumption. While native automation offers compelling convenience, local data privacy regulations and security constraints remain critical considerations for users delegating device controls to an autonomous digital assistant.
Market watchers will monitor commercial sales numbers and real-world consumer feedback following the initial pre-order cycle in China. The broader tech sector will also observe whether dominant global smartphone manufacturers accelerate their own plans to transition legacy mobile operating systems into fully agent-driven environments.
Key takeaways
- StepFun launched the STEPX Neo smartphone in China with pre-orders priced at 3,999 yuan.
- The device embeds an autonomous AI agent into the operating system rather than using standalone apps.
- The launch marks a key shift in mobile computing toward native agentic hardware integration.
