SlateDB vs Supabase: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
SlateDB
SlateDB is a free, open-source embedded database built on cloud object storage, offering unlimited capacity and high reliability for modern applications.
Supabase
Supabase is an open-source database platform with instant APIs, authentication, storage, and real-time updates for building apps fast.
SlateDB
SlateDB is a free, open-source embedded database built on cloud object storage, offering unlimited capacity and high reliability for modern applications.
Supabase
Supabase is an open-source database platform with instant APIs, authentication, storage, and real-time updates for building apps fast.
SlateDB
Cloud-native embedded database for Rust applications
Unlimited storage through S3, GCS, Azure Blob
Single writer with multiple concurrent readers
Batched writes reduce API costs
Configurable durability and latency trade-offs
Built-in compression and caching
Transaction support with snapshots
Garbage collection and compaction
Open source Apache 2.0 license
Active community and regular updates
Supabase
Full Postgres database with tables and relationships
User authentication with email and social logins
File storage with image transformation
Real-time database subscriptions
Edge functions for custom code
Auto-generated REST and GraphQL APIs
Row-level security policies
Database backups and recovery
Vector embeddings for AI applications
Open-source with self-hosting option
SlateDB
SlateDB is completely free and open source under the Apache 2.0 license. There are no licensing costs, subscription fees, or usage charges for the database software itself.
However, you will pay for the cloud storage you use. Costs depend on your chosen provider and usage patterns. For example, Amazon S3 typically charges around $0.023 per gigabyte per month for standard storage, plus small fees for data transfers and API requests.
SlateDB helps reduce these costs through smart batching of write operations. Instead of making an API call for every single write, it groups them together, significantly lowering expenses compared to writing directly to object storage.
The software is maintained by an active open-source community with regular updates and improvements. Being part of the Commonhaus Foundation ensures long-term project sustainability and governance.
Supabase
Supabase offers flexible pricing to suit different project sizes and needs.
The Free plan is perfect for hobby projects and learning. It includes unlimited API requests, 500 MB database storage, 5 GB bandwidth, and 1 GB file storage. Free projects pause after one week of inactivity, and you can have up to 2 active projects.
The Pro plan costs $25 per month and includes 8 GB database space, 250 GB bandwidth, 100 GB file storage, and 100,000 monthly active users. Additional usage is charged as you go. This plan adds email support, daily backups for 7 days, and access to premium features.
The Team plan at $599 monthly adds compliance features like SOC2, single sign-on for your dashboard, priority support with service level agreements, and 14-day backup retention.
For large companies, the Enterprise plan offers custom pricing with dedicated support, uptime guarantees, private Slack channels, and the option to bring your own cloud infrastructure.