Supabase vs Firebase 2026

Supabase vs Firebase (2026 Update)

Overview

Supabase has grown into a comprehensive platform: PostgreSQL database, authentication, storage, edge functions, real-time subscriptions, vector embeddings, and cron jobs. It is open source and self-hostable. Firebase remains Google's app development platform with Firestore, Authentication, Cloud Functions (now Gen 2 on Cloud Run), Hosting, App Check, and deep integration with Google Cloud.

Key Differences

Database: Supabase gives you full PostgreSQL — ACID transactions, joins, foreign keys, extensions like pgvector. Firebase Firestore is a NoSQL document database. For relational data and complex queries, PostgreSQL is categorically better. For simple document storage with real-time sync, Firestore is simpler. Open Source: Supabase is fully open source and self-hostable. Firebase is proprietary. This matters for data sovereignty, vendor lock-in risk, and the ability to inspect and modify the platform code. Real-time: Firestore real-time sync with offline support and conflict resolution is best-in-class. Supabase Realtime handles subscriptions well but lacks built-in offline support and conflict resolution. AI/Vector: Supabase has native pgvector support for AI embeddings directly in your database. Firebase requires separate services (Vertex AI) for AI features. For AI applications, Supabase integrated approach is simpler.

Verdict

Choose Supabase for relational data, SQL familiarity, open source values, and AI/embedding workloads. Choose Firebase for best-in-class real-time sync with offline support, NoSQL document storage, or deep Google Cloud integration.