Databases: free tiers side by side

12 services, 11 with a free tier. Values are copied from each pricing page as of Oct 23, 2026. Open Evidence on any row to read the exact sentences.

Picks for SQL databases (TierDiff's overall score)

1st Turso
2nd Neon
3rd Prisma Postgres

See why

Picks for NoSQL and key-value databases (TierDiff's overall score)

1st Upstash Redis
2nd Firebase
3rd MongoDB Atlas

See why

Best in its column Not on the pricing pageCopy gives tab-separated rows with source links and the check date

Free-tier limits of 12 databases services
Service								Source
TiDB Cloud Starter	25 GB	not published	not published	250M	not published	not published	not published	pingcap.comchecked Oct 22 Official site
Reads / operations250,000,000 units / mo…Allowance¹ 25 GiB row storage 25 GiB columnar storage 250M Request Units Per organization, across up to five… Database size25 GB…Cloud Starter: Start for Free Free Monthly Allowance¹ 25 GiB row storage 25 GiB columnar storage 250M Request… Quoted from pingcap.com/pricing, checked Oct 22, 2026.
Turso	5 GB	100	not published	500M	not published	not published	not published	turso.techchecked Oct 22 Official site
Projects / databases100…Email + Support Contact us Free $0/month Databases 100 Storage 5GB Monthly Rows Read 500 Million Monthly Rows… Reads / operations500,000,000 units / mo…Free $0/month Databases 100 Storage 5GB Monthly Rows Read 500 Million Monthly Rows Written 10 Million Monthly Syncs 3GB Audit… Database size5 GB…+ Support Contact us Free $0/month Databases 100 Storage 5GB Monthly Rows Read 500 Million Monthly Rows Written 10… Quoted from turso.tech/pricing, checked Oct 22, 2026.
Prisma Postgres	2 GB	50	10 GB	200K	not published	not published	1M	prisma.iochecked Oct 23 Official site
Bandwidth out10 GB / mo…$0.064 per vCPU-hour Outbound bandwidth included Free 10 GB Starter — Pro — Business — Outbound bandwidth price… Projects / databases50…GB Pro $1.50 per GB Business $1.00 per GB Databases Free 50 Starter 1,000 Pro 1,000 Business 1,000 Data transfer… Reads / operations200,000 units / mo…Business $129 Prisma Postgres Operations included Free 200k Starter 1M Pro 10M Business 50M Operation overage Free —… Database size2 GB…per million Business $1 per million Storage included Free 2 GB Starter 10 GB Pro 50 GB Business 100 GB Storage… Requests1,000,000 requests / mo…Pro Business Prisma Compute Requests included Free 1M Starter 5M Pro 20M Business 100M Request price Free —… Quoted from prisma.io/pricing, checked Oct 23, 2026.
Firebase	1 GB	not published	not published	not published	10 GB	50K	not published	firebase.google.comchecked Oct 22 Official site
Database size1 GB…pricing Cloud Firestore Standard edition Stored data 1 GiB total No-cost up to 1 GiB total Then Google Cloud… Monthly active users50,000 users / mo…services With Identity Platform Monthly active users 50K MAUs No-cost up to 50K MAUs Then Google Cloud pricing… File storage10 GB…configurations, see Google Cloud pricing. Hosting Storage 10 GB No-cost up to 10 GB Then $0.026/GB Data transfer 360… Quoted from firebase.google.com/pricing, checked Oct 22, 2026.
Neon +1 more in Evidence	1 GB	100	5 GB	not published	5 GB	60K	not published	neon.comchecked Oct 23 Official site
Bandwidth out5 GB / mo…waiting capacity-hours Invocations1M invocations 5 GB per project included 1 day Unlimited Community… Compute hours100 hr / mo…card required. Try Neon Lakebase Postgres 100 projects 100 CU-hrs monthly per project 1 GB of storage per project… Projects / databases100…card required. Try Neon Lakebase Postgres 100 projects 100 CU-hrs monthly per project 1 GB of storage per project… Database size1 GB…Postgres 100 projects 100 CU-hrs monthly per project 1 GB of storage per project Sizes up to 2 CU (8 GB RAM)… Monthly active users60,000 users / mo…Up to 6 hoursor 1 GB of data changes 1 snapshot Up to 60k MAUs 5 GB included Compute10 active capacity-hours400… File storage5 GB…RAM) Unlimited team members Backend Managed Better Auth 5 GB of Object Storage Functions Launch Usage-based Typical… Quoted from neon.com/pricing, checked Oct 23, 2026.
MongoDB Atlas	512 MB	not published	not published	not published	not published	not published	not published	mongodb.comchecked Oct 22 Official site
Database size512 MB…learning and exploring MongoDB in a cloud environment. 512MB of storageShared RAMShared vCPU Flex $0.011/hour Build… Quoted from mongodb.com/pricing, checked Oct 22, 2026.
Convex +1 more in Evidence	500 MB	not published	not published	not published	1 GB	not published	not published	convex.devchecked Oct 22 Official site
Database size500 MB…GB-hour) \| Storage \| Storage Database storage (per GB) \| 0.5 GB included ($0.22 per additional GB) \| 50 GB included… Team members6…prototypes Freeor $0/month and pay as you go Developers (1-6) File storage Text search Vector search Crons Auth… File storage1 GB…($0.20 per additional GB) File storage (per GB) \| 1 GB included ($0.033 per additional GB) \| 100 GB included… Quoted from convex.dev/pricing, checked Oct 22, 2026.
Supabase +2 more in Evidence	500 MB	2	5 GB	not published	1 GB	50K	500K	supabase.comchecked Oct 22 Official site
Bandwidth out5 GB / mo…of inactivity Branching \| Not included in free Egress \| 5 GB included Pipelines \| Not included in free Auth \|… Projects / databases2…projects are paused after 1 week of inactivity. Limit of 2 active projects. Pro Most Popular For production… Database size500 MB…Unlimited API requests \| Included in free Database size \| 500 MB database size per project included Advanced disk… Log ingest1 GB / mo…Log retention (API & Database) \| 1 day Log Ingestion \| 1 GB included Log Query \| 100 GB included Log Drain \| Not… Monthly active users50,000 users / mo…Auth \| Feature \| Included Total Users \| Unlimited MAUs \| 50,000 included User data ownership \| Included in free Anonymous… Requests500,000 requests / mo…256 KB Edge Functions \| Feature \| Included Invocations \| 500,000 included Dashboard \| Feature \| Included Team members \|… Data retention1 day…\| Feature \| Included Log retention (API & Database) \| 1 day Log Ingestion \| 1 GB included Log Query \| 100 GB… File storage1 GB…Shared CPU • 500 MB RAM 5 GB egress 5 GB cached egress 1 GB file storage Community support Free projects are… Quoted from supabase.com/pricing, checked Oct 22, 2026.
Upstash Redis	250 MB	1	10 GB	500K	not published	not published	not published	upstash.comchecked Oct 23 Official site
Bandwidth out10 GB / mo…and hobby projects. Data Size 256 MB Monthly Bandwidth 10 GB Monthly Commands 500K Start Now Pay as You Go $0.2 per… Projects / databases1…per index \| 10K \| 1M \| 100K \| Custom \| Max Databases \| 1 \| 100 \| 100 \| Custom Features \| Supported platforms \|… Reads / operations500,000 units / mo…Data Size 256 MB Monthly Bandwidth 10 GB Monthly Commands 500K Start Now Pay as You Go $0.2 per 100K commands Flexible… Database size250 MB…$0 - Perfect for prototypes and hobby projects. Data Size 250 MB Monthly Bandwidth 10 GB Monthly Commands 500K Start… Quoted from upstash.com/pricing/redis, checked Oct 23, 2026.
Redis Cloud	30 MB	not published	not published	not published	not published	not published	not published	redis.iochecked Oct 23 Official site
Database size30 MB…Always $0 Up to 30 MBTry for free Shared cloud deployment 30 MB single DB Best-effort SLA, community support… Quoted from redis.io/pricing, checked Oct 23, 2026.
CockroachDB Basic +1 more in Evidence	not published	not published	not published	not published	not published	not published	not published	cockroachlabs.comchecked Oct 22 Official site
Usage credit$15 / mo…paying monthly by credit card or marketplace - is given $15 of resource consumption (equivalent to 50 million Request… Quoted from docs.cockroachlabs.com/docs/cockroachcloud/plan-your-cluster-basic, checked Oct 22, 2026.
PlanetScale No free tier	not published	not published	not published	not published	not published	not published	not published	planetscale.comchecked Oct 23 Official site

DBDatabases: free tiers side by side

Databases: free tiers side by side