Next.js + Vercel
Fast app shell, simple routing, and clean deployment path for 1stgraid.com/vision.
Tech and unit economics
AI where it matters, static structure where it saves money.
The platform should feel alive without letting model costs eat the subscription. The strategy is pre-cached curriculum, mini models for routine chat, stronger models for high-value moments, and daily image caps.
Supabase
Auth, lesson progress, quiz results, locker artifacts, subscriptions, and admin data.
OpenAI API
AI Teacher chat, high-value coaching moments, quizzes, revision help, and art generation.
Pre-cached lessons
Static lesson spine keeps quality consistent and keeps runtime API use under control.
Model mix
gpt-4o-mini for normal teacher chat, gpt-4o for high-value planning and critique, and gpt-image-1 for capped art moments.
Margin target
Target API cost is $3-8 per kid per month against $19-29 subscription pricing, aiming for 75-85% gross margin.
Why inside the platform
The child needs guardrails, memory, quizzes, lockers, and continuity. A raw chatbot cannot own the full learning loop.