Google Cloud SQL vs Supabase
Neither wins outright: Google Cloud SQL is cheaper for 1 of 3 workloads and Supabase for the rest.
List prices checked
Rate cards side by side
Only the axes at least one of them bills on. A dash means that provider does not charge for it.
| Billing axis | Google Cloud SQL | Supabase | Difference |
|---|---|---|---|
| Entry plan | $9.37/mo | $25.00/mo | 2.7× Google Cloud SQL |
| Storage | $0.170/GB-mo | $0.125/GB-mo | 1.4× Supabase |
| Data transfer out | — | $0.090/GB | — |
| Free tier | No | Yes | — |
Source: Google pricing (May 2026) · Supabase pricing (May 2026). Published list prices only — committed-use discounts, regional variation, and per-request charges are not included. Not yet independently re-checked against the vendor’s page.
Monthly cost for three real workloads
The rate cards applied to identical usage. This is where the winner changes.
| Workload | Google Cloud SQL | Supabase | Cheaper |
|---|---|---|---|
| Side projectA personal site or small app with modest traffic, a few gigabytes of assets, and one small always-on process. | $13 | $28 | Google Cloud SQLsaves $15/mo (54%) |
| Growing SaaSA funded product serving a few thousand daily users, with an image-heavy frontend and two application servers. | $94 | $88 | Supabasesaves $6.87/mo (7%) |
| Media-heavy siteA publisher or video product where delivery dominates the bill and compute is almost an afterthought. | $349 | $275 | Supabasesaves $74/mo (21%) |
Workload definitions are identical on every comparison page, so figures here can be read against any other pair in the same category.
What each one is for
Google Cloud SQL
by Google
Managed MySQL, Postgres, and SQL Server on Google Cloud, billed per instance-hour with automatic storage growth that is easy to leave running unnoticed.
Supabase
by Supabase
Postgres bundled with auth, object storage, and realtime subscriptions at one per-project price, which replaces several separate services for early-stage products.
Free tier: 500 MB database and 5 GB of egress per month
Common questions
- Is Google Cloud SQL or Supabase cheaper in 2026?
- It depends on volume — Google Cloud SQL wins 1 of the 3 modelled workloads and Supabase wins 2. The scenario table above shows where the crossover falls.
- Which has the better free tier, Google Cloud SQL or Supabase?
- Supabase does — 500 MB database and 5 GB of egress per month. Google Cloud SQL bills from the first unit of usage.
- What do these estimates not include?
- Committed-use and reserved discounts, regional price variation, per-request API charges, support plans, and minimum retention periods. All of those move real invoices, sometimes by a lot. These figures compare published list prices for the same workload, which is the comparison the rate cards alone cannot give you.