OpenAI is launching AirPods-like hardware with built-in voice AI. How would you set goals and success metrics for it?

Focus on defining clear, measurable goals that align with both user satisfaction and business objectives for the AirPods-like hardware. Consider metrics related to user engagement, such as daily active users (DAUs) and session length, as well as retention rates over time. Additionally, think about revenue-related metrics, like average revenue per user (ARPU) and sales targets. Don't forget to include qualitative metrics, such as customer feedback and Net Promoter Score (NPS), to gauge user experience and satisfaction with the voice AI features. Be prepared to justify your choices and explain how these metrics will inform product iterations and improvements.