Zilliz vs Weaviate: Which is Better in 2026?
Choosing between Zilliz and Weaviate 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:
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
Weaviate
Open-source vector database with ML
Best for you if:
- • Open-source vector database
- • Run locally or in the cloud
| At a Glance |  Zilliz |  Weaviate |
|---|---|---|
Starts at | Free tier + paid plansFree tier available | $45/moFlex |
Best For | Data & Databases | Data & Databases |
Rating | - | - |
Choose Zilliz or Weaviate?
Choose Zilliz if
Cloud vector database for similarity search
- Managed Milvus
- Good for vectors
- Active development
Choose Weaviate if
Open-source vector database with ML
- Built-in vectorization
- GraphQL API
- Hybrid search
| Feature | Zilliz | Weaviate |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.7/5 64 reviews | ★4.6/5 29 reviews |
| Categories | Data & DatabasesCloud & Infrastructure | Data & DatabasesVector Databases |
In-Depth Analysis
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
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
Pricing: Zilliz vs Weaviate
| Plan | Zilliz | Weaviate |
|---|---|---|
| Tier 1 | N/A | Free Free Trial |
| Tier 2 | N/A | $45 Flex |
| Tier 3 | N/A | $400 Premium |
Pricing verified from each vendor's public pricing page. Compare in detail on Zilliz pricing and Weaviate pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Zilliz
Want the highest-rated option?
Neither has user reviews yet.
Go with: Zilliz
Value user reviews?
Neither has user reviews yet.
Go with: Weaviate
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
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 Zilliz or Weaviate better?
Weaviate is rated in our evaluation. Both are freemium.
What are Zilliz and Weaviate used for?
Zilliz: Cloud vector database for similarity search. Weaviate: Open-source vector database with ML.
What does Zilliz cost vs Weaviate?
Zilliz is freemium (free tier + paid plans). Weaviate is freemium (free tier + paid plans). Visit their websites for detailed pricing.