Weaviate vs Zilliz: Which is Better in 2026?
Choosing between Weaviate 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.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Weaviate
Open-source vector database with ML
Best for you if:
- • Open-source vector database
- • Run locally or in the cloud
Zilliz
Cloud vector database for similarity search
Best for you if:
- • Zilliz is the company behind Milvus vector database with managed cloud
- • It provides enterprise vector search for AI applications
| At a Glance |  Weaviate |  Zilliz |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Data & Databases | Data & Databases |
Rating | 4.6/5 | 4.7/5 |
Free plan | Yes | Yes |
Choose Weaviate or Zilliz?
Choose Weaviate if
Open-source vector database with ML
- Built-in vectorization
- GraphQL API
- Hybrid search
Choose Zilliz if
Cloud vector database for similarity search
- Managed Milvus
- Good for vectors
- Active development
| Feature | Weaviate | Zilliz |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.6/5 29 reviews | ★4.7/5 64 reviews |
| Categories | Data & DatabasesVector Databases | Data & DatabasesCloud & Infrastructure |
In-Depth Analysis
Weaviate
Open-source vector database with ML
Strengths
- +Built-in vectorization
- +GraphQL API
- +Hybrid search
- +Good documentation
- +Open source
Weaknesses
- -Learning curve
- -Memory intensive
- -Self-hosting complex
- -Cloud pricing high
- -Less mature than Pinecone
Key features
Zilliz
Cloud vector database for similarity search
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: Weaviate vs Zilliz
| Plan | Weaviate | Zilliz |
|---|---|---|
| Tier 1 | Free Free Trial | N/A |
| Tier 2 | $45 Flex | N/A |
| Tier 3 | $400 Premium | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Weaviate pricing and Zilliz pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Weaviate
Want the highest-rated option?
Weaviate: 4.6/5 (29 reviews). Zilliz: 4.7/5 (64 reviews).
Go with: Zilliz
Value user reviews?
Weaviate: 29 reviews (4.6/5). Zilliz: 64 reviews (4.7/5).
Go with: Zilliz
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?
Zilliz is rated higher: 4.7/5 vs 4.6/5.
Key Takeaways
Weaviate
- Free tier available
- Our pick for this comparison
Zilliz
- Higher user rating: 4.7/5 vs 4.6/5
- Larger review base (64 reviews)
The Bottom Line
Weaviate is our pick.
Frequently Asked Questions
Is Weaviate or Zilliz better?
Weaviate is rated in our evaluation. Both are freemium.
What are Weaviate and Zilliz used for?
Weaviate: Open-source vector database with ML. Zilliz: Cloud vector database for similarity search.
What does Weaviate cost vs Zilliz?
Weaviate is freemium (free tier + paid plans). Zilliz is freemium (free tier + paid plans). Visit their websites for detailed pricing.