Supabase vs Neon vs Turso: Which Postgres to Bet On in 2026

Three database platforms. All three Postgres (Turso is libSQL, a Postgres-compatible SQLite fork — I'll cover the nuance). All three target the AI-app stack. They are not interchangeable.

I've shipped client work on all three. Here's the actual map.

What each one is

Supabase is Postgres + auth + storage + realtime + edge functions + vector. It's the most batteries-included. You can build a full SaaS without leaving Supabase.

Neon is serverless Postgres with branching. You point to it from your app, you get Postgres. The killer feature is database branching — every Git branch can have its own database fork.

Turso is libSQL (a SQLite variant) with edge replication. The DB lives close to your users. Faster reads. Different tradeoffs because it's SQLite-shaped, not Postgres-shaped.

Where Supabase wins

Supabase is the right default for most AI apps that need: - User authentication (the auth flow is the most polished in the category) - Row Level Security policies (RLS is a Supabase strength) - File storage for user-uploaded content - Realtime subscriptions - pgvector for embeddings

If you're building a SaaS product, Supabase removes 60% of the infrastructure decisions. You wire one platform. You get auth, DB, files, realtime, vectors.

The free tier is generous enough for real prototypes. The $25/mo Pro tier covers most apps under $5k MRR.

Where Neon wins

Neon's killer feature is branching. Every preview deploy can have its own database. Schema migrations can be tested on a branch before merging. Production data can be safely copied to a dev branch.

For a team doing serious work with database changes, branching is genuinely transformative. You stop being afraid of migrations.

Neon also wins on cold start performance. The "scale to zero" actually works without painful spinup. And the Postgres compatibility is 100% — it IS Postgres, not a Postgres-like thing.

The auth/storage/realtime story is missing. You bring those from elsewhere (Clerk for auth, R2 for storage, Pusher for realtime). It's a thinner platform.

Where Turso wins

Turso wins on read latency at the edge. If you have a globally distributed user base and read-heavy workloads, Turso's edge replication is unmatched.

Turso is also the cheapest at scale. The pricing is per-row and per-byte and you can get production usage for $10-30/mo where Supabase or Neon would be $100+.

The catch is it's SQLite-shaped. No real concurrent writes from many regions (writes go to a single primary). No pgvector (Turso has libSQL vector but it's separate). No RLS in the Postgres-strict sense.

For read-heavy edge apps Turso is great. For write-heavy apps with complex Postgres needs, Turso is the wrong default.

Where each one disappoints

Supabase disappoints on advanced Postgres features. It's still Postgres but some configurations are restricted on the managed platform. Self-hosting recovers full control but you lose the platform benefits.

Neon disappoints on the "all in one" angle. If you want a single platform that does auth + DB + storage, Neon is not it. You're wiring three or four services.

Turso disappoints on schema flexibility for relational-heavy apps. SQLite's tradeoffs don't go away because it's edge-replicated. Complex joins across many tables can be slower than Postgres.

What I default to for new projects

Supabase, for almost everything.

The reason is decision fatigue. Picking auth, DB, storage, realtime, vector — that's five decisions if you go modular. With Supabase it's zero decisions. I start building features instead of evaluating vendors.

For projects with serious database branching needs (multi-developer teams, complex migrations), Neon. Or use Supabase's branching if Supabase already covers the rest.

For projects where edge read latency is the dominant constraint (content-heavy apps, global apps with read-heavy traffic), Turso.

When I'd switch off Supabase

I'd consider switching to dedicated Neon (with separate auth/storage/etc) when: - The team is large and needs proper migration branching - The app's database is the dominant cost line and serverless scale-to-zero saves real money - The app outgrows Supabase's restricted configurations

I'd consider Turso for new projects when: - Global edge reads are the dominant requirement - Writes are infrequent (analytics dashboards, content sites, etc.) - SQLite's constraints match the shape of the data (not deeply relational)

Most apps never reach these conditions. Supabase carries them.

The vector question

All three offer vector storage now. Supabase has pgvector (mature, battle-tested). Neon has pgvector (same). Turso has libSQL vector (newer, less mature, fewer integrations).

For RAG and embedding-based features, Supabase or Neon are equivalent and Turso is slightly behind.

If your AI app is heavy on vector search, default to Supabase or Neon, not Turso.

The auth question

Supabase Auth is the most complete. SSO, social, magic link, MFA, email/password, RLS-aware. It's a real product.

Neon has no auth. You pair it with Clerk, WorkOS, or roll your own.

Turso has no auth. Same story.

If you don't want to think about auth, that's a strong Supabase signal.

What changes in 2026

The convergence is happening. Neon is adding more platform features. Turso is improving Postgres-compatibility. Supabase is improving the parts that lag (cold starts, advanced configurations).

In 12 months these will be closer. Today there's a real difference and the default of Supabase is correct for most teams.

The one rule

Never pick a database platform on benchmarks alone. The platform you can ship features against on Monday morning beats the platform with the best latency numbers. Speed-to-ship is the metric that matters most before scale.