STEPX Neo has officially debuted as the world’s first native AI Agentic Phone. During an event in Shanghai, StepFun introduced the new STEPX AI terminal brand alongside Step AOS, an operating system built specifically for AI agents. The company also unveiled its next-generation AI assistant called Step Amoo, completing an ecosystem that combines AI models, software, and hardware into one intelligent platform.
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Unlike traditional smartphones that rely on users opening individual apps, STEPX Neo is designed to understand requests, coordinate multiple actions, and complete tasks automatically. StepFun believes this marks the beginning of a new era where AI becomes an active assistant instead of simply responding to commands.
STEPX Introduces a New AI Terminal Brand
With the launch of STEPX, StepFun is introducing what it describes as the world’s first AI terminal brand built around native large language models. Rather than adding AI features to existing smartphones, the company redesigned the complete experience around intelligent agents.
The STEPX ecosystem consists of three core layers:
- Large language models that serve as the AI brain.
- Step AOS, an operating system designed for AI agents.
- AI-native hardware that brings intelligent experiences to users.
According to StepFun, these components work together instead of operating independently. The goal is to transform mobile devices from passive tools into intelligent companions capable of understanding user intentions and performing tasks proactively.
Step Edge AI Enables Hybrid Processing
StepFun also highlighted its self-developed Step Edge AI model, which has been optimized specifically for on-device hardware. The model supports low-latency AI processing while protecting user privacy by handling many multimodal tasks directly on the device.
For lightweight requests, the smartphone processes information locally without relying on cloud servers. More demanding workloads automatically switch to StepFun’s flagship cloud AI models, creating a hybrid computing system that balances speed, privacy, and computing power.
This edge-cloud collaboration helps improve response times while allowing the smartphone to tackle complex AI tasks efficiently.
Step AOS Redefines the Mobile Operating System
One of the biggest announcements was Step AOS, which StepFun describes as the world’s first operating system designed specifically for autonomous AI agents.
Traditional mobile operating systems require users to manually launch apps and complete each step themselves. Step AOS changes this model by allowing AI agents to directly access system resources, understand user intentions, and execute complete workflows automatically.
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Instead of interacting with multiple applications individually, users simply describe what they want to accomplish. The AI agent then manages the required processes behind the scenes.
Three Core Capabilities of Step AOS
Step AOS is built around three major capabilities that support autonomous AI experiences.
- Intelligent memory
- Autonomous decision-making and task execution
- Comprehensive security protection
StepFun says its dual-memory architecture achieved state-of-the-art evaluation results and can recall stored information in as little as 15 milliseconds. The operating system also combines on-device AI with cloud intelligence, allowing simple requests to receive instant responses while allocating additional computing resources for more complex reasoning tasks.
STEPX Neo Becomes the World’s First Native AI Agentic Phone
The highlight of the event was the introduction of STEPX Neo, which StepFun calls the world’s first native AI Agentic Phone. Unlike conventional smartphones that simply integrate AI features, STEPX Neo is designed around AI from the ground up.
The smartphone runs Step AOS and comes pre-installed with Step Amoo, StepFun’s next-generation personal AI assistant. Together, the AI model, operating system, and hardware work as a unified platform capable of understanding user requests, making decisions, and completing tasks across multiple services.
According to StepFun, this “model + software + hardware” approach creates a more natural interaction between people and AI. Instead of switching between several apps, users can simply explain what they want, and the AI agent handles the workflow automatically.
STEPX Neo Achieves China’s Highest Public AI Certification
StepFun also announced that STEPX Neo has passed China’s first Artificial Intelligence Terminal Intelligence Classification certification at the L3 level. This is currently the highest level available through the public testing program.
The company says STEPX Neo is currently the only agentic smartphone to receive an L3 certification, making it an important milestone for AI-powered mobile devices in China.
Step AOS Focuses on AI Security
Alongside the hardware launch, StepFun introduced new AI security initiatives developed with the Shanghai AI Laboratory.
The two organizations jointly published the following documents:
- Next-Generation Agent System Security Technology White Paper
- Cybersecurity Guidelines for On-Device Large Language Models
The framework introduces four key principles for building trustworthy AI systems:
- Trustworthy
- Visible
- Controllable
- Reversible
StepFun also confirmed that it is working with partners to help establish national standards for AI agent security as intelligent systems become more capable.
STEPX Expands Its AI Ecosystem
To strengthen its AI platform, StepFun announced partnerships with several major Chinese companies, allowing users to access a wide range of services through AI-powered interactions.
The first group of ecosystem partners includes:
- Trip.com
- Alipay
- DiDi
- Meituan
- WPS Office
- Jianying
These partnerships are expected to support AI-powered travel planning, transportation, local services, office productivity, government services, and content creation from a single intelligent assistant.
STEPX Launches the Imagination Project
During the launch event, STEPX also announced the STEPX Imagination Project in collaboration with Bilibili.
The initiative will allow users to submit ideas for future AI devices while giving developers opportunities to build new AI agents and skills. The program is expected to open to the public in mid-August.
By inviting community participation, StepFun hopes to shape future AI hardware based on real user needs rather than relying only on internal product development.
A New Direction for AI Smartphones
The launch of STEPX Neo represents StepFun’s vision for the next generation of AI devices. Instead of treating artificial intelligence as another smartphone feature, the company has redesigned the entire experience around autonomous AI agents capable of understanding intent and completing tasks on behalf of users.
With Step AOS, the new STEPX hardware platform, and growing partnerships across China’s digital ecosystem, StepFun aims to build a complete AI environment that goes beyond traditional smartphones.
As competition in AI hardware continues to grow, STEPX Neo enters the market as one of the first devices focused entirely on agent-based computing, highlighting how future smartphones may become proactive digital assistants instead of simple communication tools.
What We Know So Far About STEPX Neo
StepFun has officially introduced STEPX Neo as the world’s first native AI Agentic Phone, but the company is currently focusing on its AI platform rather than traditional smartphone hardware. While the launch showcased the capabilities of Step AOS, Step Amoo, and the company’s AI ecosystem, many key hardware specifications have not yet been revealed. :contentReference[oaicite:0]{index=0}
Confirmed Features
- Step AOS (Agentic-native Operating System)
- Built-in Step Amoo personal AI assistant
- Step Edge on-device AI model with edge-cloud computing
- Native large language model (LLM) integration
- Cross-app AI task execution
- On-device AI processing with cloud support for complex tasks
- China’s L3 AI Terminal Intelligence Certification
Still Unannounced
StepFun has not disclosed the phone’s processor, RAM, storage options, display specifications, battery capacity, charging speed, camera sensors, pricing, or commercial release date. The company has also not confirmed when STEPX Neo will be available outside China.
More information is expected in the coming months as StepFun continues expanding the STEPX ecosystem and prepares the device for a wider commercial rollout. Until then, all unconfirmed hardware specifications circulating online should be treated as rumors rather than official information.
(Source in Chinese)
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