ArangoDB vs PostgreSQL: Which is Better in 2026?
Choosing between ArangoDB and PostgreSQL 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.
Bottom line: PostgreSQL is our overall Data & Databases pick. Pick ArangoDB if you need its specific feature set.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
ArangoDB
Multi-model database for graphs, documents, and key-value
Best for you if:
- • You want multi-model database
- • You want graph + document + K/V
PostgreSQL
Advanced open source SQL database
Best for you if:
- • You want a fully free tool (ArangoDB requires payment)
- • You want most advanced open-source database
- • You want excellent for complex queries and JSON
| At a Glance | ArangoDB | PostgreSQL |
|---|---|---|
Starts at | $0.2/hourOasis | FreeFree tier available |
Best For | Data & Databases | Data & Databases |
Rating | 4.5/5 | 4.5/5 |
Free plan | No | Yes |
Choose ArangoDB or PostgreSQL?
Choose ArangoDB if
Multi-model database for graphs, documents, and key-value
- You want multi-model database
- You want graph + document + K/V
Choose PostgreSQL if
Advanced open source SQL database
- You want a fully free tool (ArangoDB requires payment)
- You want most advanced open-source database
- You want excellent for complex queries and JSON
| Feature | ArangoDB | PostgreSQL |
|---|---|---|
| Pricing Model | Paid | Free |
| User Rating | ★4.5/5 116 reviews | ★4.5/5 1,094 reviews |
| Categories | Data & DatabasesManaged Databases | Data & Databases |
In-Depth Analysis
ArangoDB
Multi-model database for graphs, documents, and key-value
ArangoDB's pricing is quite generous, offering a robust Community edition for free and a flexible Oasis managed service starting at $0.20/hour.
Strengths
- +Multi-model database
- +Graph + document + K/V
- +Good performance
- +AQL query language
- +Open source
Weaknesses
- -Smaller community
- -Learning curve
- -Less known
- -Documentation gaps
- -Ecosystem smaller
Key features
PostgreSQL
Advanced open source SQL database
PostgreSQL's pricing, being entirely free and open source, is exceptionally generous and fair compared to any commercial database solution.
Strengths
- +Most advanced open-source database
- +Excellent for complex queries and JSON
- +Strong data integrity and ACID compliance
- +Highly extensible with extensions
- +Large community and ecosystem
Weaknesses
- -Can be complex to tune for performance
- -Vertical scaling more limited than NoSQL
- -Replication setup requires expertise
- -Memory-intensive for large datasets
- -Less suitable for simple key-value use cases
Key features
Pricing: ArangoDB vs PostgreSQL
| Plan | ArangoDB | PostgreSQL |
|---|---|---|
| Tier 1 | Community | $0 Free |
| Tier 2 | Custom Enterprise | N/A |
| Tier 3 | $0.2 hour Oasis | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on ArangoDB pricing and PostgreSQL pricing.
Who Should Use What?
On a budget?
PostgreSQL is free. ArangoDB is paid.
Go with: PostgreSQL
Want the highest-rated option?
ArangoDB: 4.5/5 (116 reviews). PostgreSQL: 4.5/5 (1,094 reviews).
Go with: ArangoDB
Value user reviews?
ArangoDB: 116 reviews (4.5/5). PostgreSQL: 1,094 reviews (4.5/5).
Go with: PostgreSQL
3 Questions to Help You Decide
What's your budget?
ArangoDB is paid. PostgreSQL is free. Go with PostgreSQL if free matters most.
What's your use case?
Both are data & databases tools. Compare their specific features to decide.
How important are ratings?
Both are rated 4.5/5.
Key Takeaways
PostgreSQL
- Larger review base (1,094 reviews)
- Completely free
- Our pick for this comparison
ArangoDB
- Choose if you want multi-model database for graphs, documents, and key-value
The Bottom Line
PostgreSQL is our overall Data & Databases pick.
Frequently Asked Questions
Is ArangoDB or PostgreSQL better?
PostgreSQL is rated in our evaluation. ArangoDB is paid and PostgreSQL is free.
What are ArangoDB and PostgreSQL used for?
ArangoDB: Multi-model database for graphs, documents, and key-value. PostgreSQL: Advanced open source SQL database.
What does ArangoDB cost vs PostgreSQL?
ArangoDB is a paid tool. PostgreSQL is completely free. Visit their websites for detailed pricing.