Quick verdict
Use Supabase when SQL and Postgres matter. Use Firebase when realtime app patterns and Google ecosystem fit the product.
Best for
- Supabase: SaaS dashboards, SQL analytics, relational data
- Firebase: mobile apps, realtime sync, simple document data
Watch out for
- Plan row-level security carefully
- AI logs can grow faster than expected
Recommended stack
Supabase or Firebase
Vercel
Resend
SilkRouter
Where SilkRouter fits
Your hosting, CRM, email, and automation tools should not force one model provider forever. SilkRouter gives AI startups one API for supported AI models, so routing and spend visibility can live in one place.
One API For All AI Models