Convex vs Supabase: TypeScript-native realtime vs full Postgres BaaS in 2026
Convex is TypeScript-native realtime backend with tightly-integrated functions + DB. Supabase is Postgres-first BaaS with auth + storage + realtime. Pick Convex for TS-first realtime, Supabase for SQL-first apps.
At a glance
| Dimension | Convex | Supabase |
|---|---|---|
| Primary language | TypeScript-native | SQL + any client |
| Database | Document-style with ACID transactions | PostgresWIN |
| Realtime | First class — every query is reactiveWIN | Realtime channels |
| Function model | TypeScript functions tightly coupled to DBWIN | Edge functions (Deno) |
| Auth | Built-in + integrations | Built-in (Supabase Auth) |
| Storage | Built-in | Built-in |
| pgvector / embeddings | Vector index built in | Postgres pgvector |
| Ops complexity | Lightest — single platformWIN | Postgres + extensions to manage |
| Best for | TypeScript-first realtime apps | SQL-first apps with broad BaaS |
Verdict
Convex is the right pick for TypeScript-first apps where realtime is core — every query is reactive by default, functions are tightly coupled to the DB, and operations are simpler than running Postgres. Supabase is the right pick for SQL-first apps that want a familiar Postgres + auth + storage + realtime + edge stack. For Next.js apps with heavy realtime requirements, Convex. For traditional SQL backend with the standard BaaS surface, Supabase.
When to pick which
Pick Convex
TypeScript-first realtime apps, single-platform simplicity.
Pick Supabase
SQL-first apps, broad BaaS, Postgres familiarity.
FAQ
Convex or Supabase in 2026?
Convex for TS-first realtime; Supabase for SQL-first BaaS.
Cheapest at low scale?
Both have generous free tiers; pricing depends on usage shape.
Best for AI app building?
Supabase — most AI builders default to it. Convex is the modern alternative for TypeScript-heavy stacks.
Last updated: 2026-06-01.