Andi – AI language tutor with a 3D talking teacher (Realtime API)

Show HN: Andi – AI language tutor with a 3D talking teacher (Realtime API)

Andi – AI language tutor with a 3D talking teacher (Realtime API) is a business in show hn launch.

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I vibe-coded Andi — a browser-based AI language tutor where you practice with a 3D talking teacher in real time. It's built with the Realtime API, WebRTC (via LiveKit), and Three.js, Next.js plus a custom lipsync animation system. The biggest challenge was performance — running smooth 3D and real-time audio in-browser is brutal. I ended up designing a lightweight 30MB character model (down from 500MB) to make it usable on the web.It’s desktop-only for now. Mobile browsers don't have enough performance for heavy 3d models. If browser version gets stuck, just reload the lesson. Chrome is better then Safari.Would love feedback on: – Whether this tool can find real product–market fit in such a c

Andi – AI language tutor with a 3D talking teacher (Realtime API) is positioned in show hn launch, a segment that rewards a clear, focused offering.

Its current recorded stage is Show HN launch.

Website: www.anditutor.com/en/landing