MongoDB vs ScyllaDB: Which is Better in 2026?
Choosing between MongoDB and ScyllaDB comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
MongoDB
Document database that made NoSQL mainstream
Best for you if:
- • Document database storing JSON-like data structures
- • Flexible schema that adapts as applications evolve
ScyllaDB
High-performance NoSQL database
Best for you if:
- • ScyllaDB is a high-performance NoSQL database compatible with Cassandra
- • It delivers 10x better throughput with consistent low latency
| At a Glance |  MongoDB |  ScyllaDB |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Data & Databases | Data & Databases |
Rating | 4.6/5 | 3.9/5 |
Free plan | Yes | Yes |
Choose MongoDB or ScyllaDB?
Choose MongoDB if
Document database that made NoSQL mainstream
- Flexible schema for rapid development
- Excellent for document-oriented data
- Horizontal scaling built-in
Choose ScyllaDB if
High-performance NoSQL database
- Fast Cassandra alternative
- Good performance
- C++ based
| Feature | MongoDB | ScyllaDB |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.6/5 1,011 reviews | ★3.9/5 12 reviews |
| Categories | Data & DatabasesCloud & Infrastructure | Data & DatabasesCloud & Infrastructure |
In-Depth Analysis
MongoDB
Document database that made NoSQL mainstream
Strengths
- +Flexible schema for rapid development
- +Excellent for document-oriented data
- +Horizontal scaling built-in
- +Atlas cloud service is user-friendly
- +Good for real-time analytics
Weaknesses
- -Not ideal for complex relationships
- -Transactions less mature than SQL databases
- -Can be expensive at scale on Atlas
- -Query performance requires proper indexing
- -License changes caused community concerns
Key features
ScyllaDB
High-performance NoSQL database
Strengths
- +Fast Cassandra alternative
- +Good performance
- +C++ based
- +Active development
- +Good documentation
Weaknesses
- -Learning curve
- -Cassandra compatibility
- -Enterprise features paid
- -Operational complexity
- -Smaller community
Key features
Pricing: MongoDB vs ScyllaDB
| Plan | MongoDB | ScyllaDB |
|---|---|---|
| Tier 1 | $0 Free (M0) | Free Open Source |
| Tier 2 | $0.011/hour Flex Cluster | Usage-based Cloud Professional |
| Tier 3 | $57 Dedicated M10 | Custom Cloud Enterprise |
| Tier 4 | $389 Dedicated M30 | N/A |
| Tier 5 | Custom Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on MongoDB pricing and ScyllaDB pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: MongoDB
Want the highest-rated option?
MongoDB: 4.6/5 (1,011 reviews). ScyllaDB: 3.9/5 (12 reviews).
Go with: MongoDB
Value user reviews?
MongoDB: 1,011 reviews (4.6/5). ScyllaDB: 12 reviews (3.9/5).
Go with: MongoDB
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Both are data & databases tools. Compare their specific features to decide.
How important are ratings?
MongoDB is rated higher: 4.6/5 vs 3.9/5.
Key Takeaways
ScyllaDB
- Free tier available
- Our pick for this comparison
MongoDB
- Higher user rating: 4.6/5 vs 3.9/5
- Larger review base (1,011 reviews)
The Bottom Line
ScyllaDB is our pick.
Frequently Asked Questions
Is MongoDB or ScyllaDB better?
ScyllaDB is rated in our evaluation. Both are freemium.
What are MongoDB and ScyllaDB used for?
MongoDB: Document database that made NoSQL mainstream. ScyllaDB: High-performance NoSQL database.
What does MongoDB cost vs ScyllaDB?
MongoDB is freemium (free tier + paid plans). ScyllaDB is freemium (free tier + paid plans). Visit their websites for detailed pricing.