Neon

What it does

Neon is a serverless Postgres database. Compute scales to zero when idle (you pay $0 when no queries are running), branches like Git (instant database copies for previews), and supports point-in-time recovery.

Who it's best for

Developers building modern web apps who want Postgres without the operational overhead. Especially powerful for preview deploys (each PR gets its own database branch), AI app prototyping, and anything serverless.

Where it's strong

Scale-to-zero. Idle databases cost nothing. Perfect for side projects, dev environments, and infrequently-used production apps.

Database branching. Spin up a full database copy in milliseconds — for testing migrations, preview environments, or "what if" scenarios. Game-changer for dev workflow.

Postgres-native. No proprietary query language. Full Postgres compatibility means existing tools (Prisma, Drizzle, pg_dump, etc.) work unchanged.

Where it's weak

No auth/storage layer. Unlike Supabase, Neon is pure database. You wire your own auth, file storage, etc. More flexibility but more work.

Cold-start latency. First query after scale-to-zero takes 1-3 seconds to wake up. Not noticeable for most apps; bad for high-frequency low-latency use cases.

Pricing on heavy use. Free tier is generous; serious production use can run $50-$500/mo+. Roughly comparable to Supabase Pro at similar scale.

Verdict

Pick Neon if you want pure Postgres with scale-to-zero economics and branching. Pick Supabase if you want database + auth + storage + edge functions bundled. For AI apps using Vercel, Neon's serverless model fits the deployment pattern almost perfectly. The free tier is enough to evaluate.