Milvus vs Zilliz: Which is Better in 2026?
Choosing between Milvus and Zilliz 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: Milvus wins this matchup. Our overall Data & Databases pick is PostgreSQL. Our free Data & Databases pick is PostgreSQL. Pick Zilliz if you need data & databases.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Milvus
Open-source vector database for AI
Best for you if:
- • You need something completely free
- • You need vector databases features specifically
- • Milvus is an open-source vector database for AI similarity search
- • It handles billion-scale vector search for recommendation and AI applications
Zilliz
Cloud vector database for similarity search
Best for you if:
- • You need data & databases features specifically
- • Zilliz is the company behind Milvus vector database with managed cloud
- • It provides enterprise vector search for AI applications
| At a Glance |  Milvus |  Zilliz |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Vector Databases | Data & Databases |
Rating | 4.8/5 | 4.7/5 |
Free plan | Yes | Yes |
Choose Milvus or Zilliz?
Choose Milvus if
Open-source vector database for AI
- High performance
- Scalable
- Open source
- You want a fully free tool (Zilliz requires payment)
- Your work is vector databases-shaped, not data & databases-shaped
Choose Zilliz if
Cloud vector database for similarity search
- Managed Milvus
- Good for vectors
- Active development
- Your work is data & databases-shaped, not vector databases-shaped
| Feature | Milvus | Zilliz |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | ★4.8/5 310 reviews | ★4.7/5 53 reviews |
| Categories | Vector DatabasesData & Databases | Data & DatabasesCloud & Infrastructure |
In-Depth Analysis
Milvus
Open-source vector database for AI
Milvus offers a very generous pricing model, especially with its robust open-source option and the Zilliz Cloud Free tier providing 5GB storage and 2.5M vCUs/month at no cost.
Watch out
Overage fees for vCUs on Serverless tier
Strengths
- +High performance
- +Scalable
- +Open source
- +Good for large scale
- +Active development
Weaknesses
- -Complex operations
- -Heavy resource usage
- -Learning curve
- -Kubernetes recommended
- -Documentation dense
Key features
Zilliz
Cloud vector database for similarity search
Zilliz's pricing is fair, offering a generous free tier for initial exploration.
Watch out
Overage fees for exceeding storage limits
Strengths
- +Managed Milvus
- +Good for vectors
- +Active development
- +Good performance
- +Enterprise ready
Weaknesses
- -Expensive
- -Learning curve
- -Vendor lock-in
- -Feature gaps
- -Per-CU pricing
Key features
Pricing: Milvus vs Zilliz
| Plan | Milvus | Zilliz |
|---|---|---|
| Tier 1 | Free Open Source | N/A |
| Tier 2 | Free Zilliz Cloud Free | N/A |
| Tier 3 | Pay-as-you-go Zilliz Serverless | N/A |
| Tier 4 | $99 Zilliz Dedicated | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Milvus pricing and Zilliz pricing.
Who Should Use What?
On a budget?
Milvus is free. Zilliz is freemium.
Go with: Milvus
Want the highest-rated option?
Milvus: 4.8/5 (310 reviews). Zilliz: 4.7/5 (53 reviews).
Go with: Milvus
Value user reviews?
Milvus: 310 reviews (4.8/5). Zilliz: 53 reviews (4.7/5).
Go with: Milvus
3 Questions to Help You Decide
What's your budget?
Milvus is free. Zilliz is freemium. Go with Milvus if free matters most.
What's your use case?
Milvus is a vector databases tool. Zilliz is in data & databases. Pick the category that matches your needs.
How important are ratings?
Milvus is rated higher: 4.8/5 vs 4.7/5.
Key Takeaways
Milvus
- Higher user rating: 4.8/5 vs 4.7/5
- Larger review base (310 reviews)
- Completely free
- Our pick for this comparison
Zilliz
- Better fit for data & databases
The Bottom Line
Milvus wins this matchup. Our overall Data & Databases pick is PostgreSQL. Our free Data & Databases pick is PostgreSQL.
Frequently Asked Questions
Is Milvus or Zilliz better?
Milvus is rated in our evaluation. Milvus is free and Zilliz is freemium.
What are Milvus and Zilliz used for?
Milvus: Open-source vector database for AI. Zilliz: Cloud vector database for similarity search.
What does Milvus cost vs Zilliz?
Milvus is completely free. Zilliz is freemium (free tier + paid plans). Visit their websites for detailed pricing.