CockroachDB
MongoDB
| Feature | CockroachDB | MongoDB |
|---|---|---|
| Pricing | Free / from $0/mo | Free / from $0.1/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.5 / 5 |
| Best For | distributed-applications, fintech, global-companies, high-availability-apps | startups, app-developers, content-management, iot-applications |
| Founded | 2015 | 2007 |
| Distributed Sql | ✓ | ✗ |
| Multi Region | ✓ | ✗ |
| Auto Scaling | ✓ | ✗ |
| Postgresql Compatible | ✓ | ✗ |
| Backup Recovery | ✓ | ✗ |
| Change Data Capture | ✓ | ✗ |
| Multi Tenancy | ✓ | ✗ |
| Document Storage | ✗ | ✓ |
| Atlas Cloud | ✗ | ✓ |
| Aggregation Pipeline | ✗ | ✓ |
| Full Text Search | ✗ | ✓ |
| Change Streams | ✗ | ✓ |
| Sharding | ✗ | ✓ |
| Time Series | ✗ | ✓ |
| Atlas Search | ✗ | ✓ |
✓ CockroachDB Pros
- Survives infrastructure failures automatically
- PostgreSQL-compatible wire protocol
- Horizontal scaling without application changes
- Multi-region deployment with low-latency reads
- Generous free tier (10 GiB storage)
✗ CockroachDB Cons
- Higher latency than single-node databases for simple queries
- Complex pricing model for serverless tier
- Some PostgreSQL features not fully supported
✓ MongoDB Pros
- Flexible document model handles varied data structures
- Atlas cloud service simplifies deployment and scaling
- Excellent developer experience and documentation
- Strong aggregation framework for complex queries
- Horizontal scaling with built-in sharding
✗ MongoDB Cons
- Not ideal for highly relational data
- Atlas costs can escalate with heavy usage
- Transactions less mature than relational databases
The Verdict
CockroachDB is built for distributed applications and fintech, with a focus on distributed-sql and multi-region. MongoDB targets startups and app developers and leads with document-storage and atlas-cloud.
Both tools come in at similar price points ($0/mo for CockroachDB, $0.1/mo for MongoDB), so pricing won't make the decision for you.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, MongoDB offers broader built-in capabilities (8 features vs 7), while CockroachDB takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.