Tencent-backed AI startup StepFun launched its STEPX Neo smartphone on Oct. 13 for 3,999 yuan, about $560, with an AI agent built into the operating system. According to NS3.AI, pre-orders opened on JD.com, Tmall and Douyin, and the first sales event is set for Oct. 16. The price includes 12 months of AI access, with an allowance of 100 billion tokens per month. StepFun has not disclosed the cost of access after the first year. Nearly 100 companies and products, including Alipay and Tencent, have signed on to the agent, called Amoo.