Weaviate vs Milvus: Head-to-Head Comparison

Quick Verdict

Weaviate is the better pick for hybrid search with self-hosted or managed options. Milvus is the better pick for very large datasets that need distributed vector search.

---

At a Glance

Feature	Weaviate	Milvus
Best For	Hybrid search with self-hosted or managed options	Very large datasets that need distributed vector search
Pricing	Free open source; paid managed cloud	Free open source; paid managed cloud
Free to Start	Yes	Yes
License	Open source	Open source
Deployment	Self-hosted or managed cloud	Self-hosted or managed cloud
Link	Visit Weaviate	Visit Milvus

---

Detailed Breakdown

Weaviate

Open-source AI-native vector database

Pros:

• Built-in hybrid vector and keyword search
• Modules for vectorization and generative search
• Self-host or use Weaviate Cloud

Cons:

• Memory-hungry at large scale
• More configuration than fully managed options

---

Milvus

Cloud-native vector database built for billion-scale search

Pros:

• Designed for billions of vectors
• Many index types including GPU indexes
• Managed option via Zilliz Cloud

Cons:

• Complex distributed deployment
• Heavier operational footprint

---

Key Differences

• Positioning: Weaviate — open-source AI-native vector database. Milvus — cloud-native vector database built for billion-scale search.
• Both share the same licensing model (open source), so the decision comes down to features and workflow fit.
• Pricing: Weaviate — free open source; paid managed cloud. Milvus — free open source; paid managed cloud.
• Signature strength: Weaviate — built-in hybrid vector and keyword search. Milvus — designed for billions of vectors.

---

Frequently Asked Questions

Is Weaviate better than Milvus?

It depends on your requirements. Weaviate is a strong fit for hybrid search with self-hosted or managed options, while Milvus suits very large datasets that need distributed vector search.

Is Weaviate free to use?

Yes, you can start with Weaviate for free. Pricing model: Free open source; paid managed cloud.

Is Milvus free to use?

Yes, you can start with Milvus for free. Pricing model: Free open source; paid managed cloud.

Can I self-host Weaviate or Milvus?

Weaviate can be self-hosted. Deployment options: self-hosted or managed cloud. Milvus can be self-hosted. Deployment options: self-hosted or managed cloud.

What are the main drawbacks of Weaviate and Milvus?

Weaviate: memory-hungry at large scale; more configuration than fully managed options. Milvus: complex distributed deployment; heavier operational footprint.