ScyllaDB vs MongoDB: Which is Better in 2026?
Choosing between ScyllaDB and MongoDB 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:
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
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
| At a Glance |  ScyllaDB |  MongoDB |
|---|---|---|
Starts at | Usage-based/moCloud Professional | $0.011/hour/moFlex Cluster |
Best For | Data & Databases | Data & Databases |
Rating | - | - |
Choose ScyllaDB or MongoDB?
Choose ScyllaDB if
High-performance NoSQL database
- Fast Cassandra alternative
- Good performance
- C++ based
Choose MongoDB if
Document database that made NoSQL mainstream
- Flexible schema for rapid development
- Excellent for document-oriented data
- Horizontal scaling built-in
| Feature | ScyllaDB | MongoDB |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★3.9/5 12 reviews | ★4.6/5 1,011 reviews |
| Categories | Data & DatabasesCloud & Infrastructure | Data & DatabasesCloud & Infrastructure |
In-Depth Analysis
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
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
Pricing: ScyllaDB vs MongoDB
| Plan | ScyllaDB | MongoDB |
|---|---|---|
| Tier 1 | Free Open Source | $0 Free (M0) |
| Tier 2 | Usage-based Cloud Professional | $0.011/hour Flex Cluster |
| Tier 3 | Custom Cloud Enterprise | $57 Dedicated M10 |
| Tier 4 | N/A | $389 Dedicated M30 |
| Tier 5 | N/A | Custom Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on ScyllaDB pricing and MongoDB pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: ScyllaDB
Want the highest-rated option?
Neither has user reviews yet.
Go with: ScyllaDB
Value user reviews?
Neither has user reviews yet.
Go with: ScyllaDB
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?
Neither has user reviews yet.
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 ScyllaDB or MongoDB better?
ScyllaDB is rated in our evaluation. Both are freemium.
What are ScyllaDB and MongoDB used for?
ScyllaDB: High-performance NoSQL database. MongoDB: Document database that made NoSQL mainstream.
What does ScyllaDB cost vs MongoDB?
ScyllaDB is freemium (free tier + paid plans). MongoDB is freemium (free tier + paid plans). Visit their websites for detailed pricing.