Azure Cosmos DB vs FaunaDB: Which Should You Choose in 2026?
Choosing between Azure Cosmos DB and FaunaDB 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:
Azure Cosmos DB
Globally distributed multi-model database on Azure
Best for you if:
- • You want the higher-rated option (8.6/10 vs 8.2/10)
- • You need managed databases features specifically
- • Azure Cosmos DB is a globally distributed NoSQL database with multiple consistency models
- • It provides single-digit millisecond latency and automatic scaling worldwide
FaunaDB
Serverless document database with GraphQL
Best for you if:
- • You need serverless databases features specifically
- • FaunaDB is a serverless document database with native GraphQL support
- • It provides globally distributed data with ACID transactions and no capacity planning
| At a Glance | ||
|---|---|---|
Price | Paid | Paid |
Best For | Managed Databases | Serverless Databases |
Rating | 86/100 | 82/100 |
| Feature | Azure Cosmos DB | FaunaDB |
|---|---|---|
| Pricing Model | Paid | Paid |
| Editorial Score | 86 | 82 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Managed DatabasesDatabase Builders | Serverless DatabasesAPI Tools |
Understanding the Differences
Both Azure Cosmos DB and FaunaDB solve similar problems, but they approach them differently.Azure Cosmos DB positions itself as "globally distributed multi-model database on azure" while FaunaDBfocuses on "serverless document database with graphql". These differences matter depending on what you're trying to accomplish.
When to Choose Azure Cosmos DB
Azure Cosmos DB makes sense if you're looking for a comprehensive paid solution. With a score of 86/100, it's our top pick in this comparison.
When to Choose FaunaDB
FaunaDB is worth considering if you need a professional-grade tool.
Who Should Use What?
Bootstrapped or small team?
Neither is free, but both have their value. Test them both and see which clicks.
We'd pick: FaunaDB
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Azure Cosmos DB handles scale better in our testing.
We'd pick: Azure Cosmos DB
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Azure Cosmos DB is built for organizations like yours.
We'd pick: Azure Cosmos DB
Still not sure? Answer these 3 questions
How much can you spend?
Both are paid tools. If money isn't the issue, go with Azure Cosmos DB—it scored higher.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Azure Cosmos DB higher (86/100). But the community has upvoted FaunaDB more (0 votes). Pick your source of truth.
Key Takeaways
What Azure Cosmos DB Does Better
- Higher overall score (86/100)
- Our recommendation for most use cases
Consider FaunaDB If
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Azure Cosmos DB (86/100). But the honest answer is that "better" depends on your situation. Azure Cosmos DB scores higher in our analysis, but FaunaDB might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is Azure Cosmos DB or FaunaDB better?
Based on our analysis, Azure Cosmos DB scores higher with 86/100. Azure Cosmos DB ispaid while FaunaDB is paid. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from Azure Cosmos DB to FaunaDB easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do Azure Cosmos DB and FaunaDB offer free trials?
Most software in this category offers free trials or free tiers. Azure Cosmos DB is paid with potential trial.FaunaDB is paid with potential trial. Visit their websites for current trial offers.