What is STEPX Neo
STEPX Neo is the world's first large-model-native AI agent phone launched by StepFun, equipped with the agent-native operating system Step AOS and the main agent Amoo. The phone reconstructs the "AI is the OS" architecture from the ground up; through a unified computing resource pool, a cross-device semantic memory layer, and an atomic capability engine, it gives the agent system-level scheduling authority, enabling natural-language-driven task-level delegation and breaking the threefold limitations of traditional human-computer interaction: the memory wall, the decision wall, and the action wall.
Main features of STEPX Neo
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Agent-native system: Step AOS reconstructs the operating system from the kernel layer, making the agent the protagonist of the system rather than an add-on application.
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Device-cloud collaborative computing: Unified scheduling of on-device NPU and cloud computing power, millisecond-level response for instant tasks, and cloud processing for complex reasoning.
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Cross-device unified memory: A dual-domain structure records user and agent information, and a three-step chain achieves 15-millisecond-level memory recall for everyday Q&A.
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Atomic capability orchestration: System functions are split into thousands of composable atomic units, with native support for MCP/A2A/CLI protocols.
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Cascaded model scheduling: The Step Edge on-device model dynamically collaborates with cloud Flash/Pro models, automatically selecting the route based on task complexity.
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Security governance framework: Operations run in a trusted execution environment, permissions are granted on demand, processes are auditable, and misoperations can be undone and rolled back.
STEPX Neo specifications
- System kernel: Equipped with the Step AOS agent-native operating system and the built-in system-level personal agent Amoo, realizing a ground-up reconstructed Agentic-native architecture.
- Intelligence grading: It has passed the first batch of L3 level testing under the national standard "Artificial Intelligence Terminal Intelligence Grading," the highest level currently open for testing.
- Ecosystem access: The first batch of ecosystem partners covers mainstream applications and services such as Meituan, WPS, Jianying, Ctrip, Amap, Alipay, Baidu, Didi, JD.com, Weibo, and Baidu Maps.
STEPX Neo pricing and configuration
Core hardware configurations such as official pricing and release date have not been disclosed.
Where to buy STEPX Neo
STEPX Neo is not yet available for purchase, and there is currently no official purchase address or pre-sale channel.
STEPX Neo application scenarios
- Smart travel: Delegate to Amoo in one sentence to automatically check flights, book hotels, sync calendar itineraries, and send confirmation emails, all without manually switching apps.
- Office automation: The agent automatically organizes meeting minutes, fills out forms across applications, and syncs project progress to WPS and DingTalk, enabling seamless connection of multi-platform office workflows.
- Life assistant: Based on cross-device unified memory, Amoo proactively reminds users of birthdays and anniversaries, and combines Meituan and Amap to recommend restaurants and travel routes, completing the full chain from decision to execution.
- Content creation: Through voice or visual input, it calls atomic capabilities such as Jianying and WPS to automatically edit videos and generate copy, responding to creative inspiration in real time on-device while handling complex rendering in the cloud.