Validate at scale: the business model and the AI bet

You will be able to

• Sketch your business model on a page: customer, value, channel, revenue, costs
• Choose a pricing approach: value-based, cost-plus or competitor-referenced
• Design a willingness-to-pay test with a threshold written before any result
• Calculate acquisition cost, payback, churn and lifetime value, measured and assumed apart
• Decide between a free trial, freemium and a paid pilot, and say why

OUTPUT · Business model, pricing test card, unit economics: product/08-business-model.md

You will be able to

• Write an AI Feature Card: job, input, output, quality bar and fallback
• Turn “good” into six success criteria, each one something you can count or grade
• Write 20 eval cases with expected behaviour and a pass threshold, before any code
• Estimate cost per call and per user per month from tokens in and tokens out
• List five risks (wrong, unsafe, private, expensive, slow), each with a mitigation

OUTPUT · AI Feature Card + eval set v1 + cost estimate in product/08-ai-feature.md