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Milvus

Open-source vector database for scalable similarity search

As of 30 August 2026, Milvus is free to use. Milvus is an open-source vector database built for scalable similarity search and AI applications. Softwr lists it under Machine Learning. Milvus is made by Zilliz, launched in 2017, available on Linux, macOS, Windows, Web.

Overview

What Milvus does

Milvus is an open-source vector database built for scalable similarity search and AI applications. It supports billion-scale vector search with high performance, provides multiple index types, and integrates with popular ML frameworks for embedding generation.

What people use it for

  • Self hosting a vector database for semantic search
  • Storing and querying embeddings for retrieval augmented generation
  • Similarity search over images, audio or text at scale

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Milvus.

  • Vector dimensions are capped at 32,768
  • A collection is limited to 64 fields, 1,024 partitions and 16 shards
  • Only 1 index is allowed per field
  • Search returns at most 16,384 vectors as top-k, and nq is capped at 16,384
  • Input and output per RPC is capped at 64 MB for insert, search and query
  • VARCHAR values are limited to 65,535 characters
  • Data loaded into query nodes cannot exceed 90% of available memory
  • An instance supports at most 65,536 collections

Cross-shopped

What people choose instead of Milvus

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

Pricing

What Milvus costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Open Source

Free

  • Full features
  • Self-hosted
  • Community support

Zilliz Cloud

Free

  • Managed service
  • Free tier available

Capabilities

Features

  • Billion-scale vectors

  • Multiple index types

  • GPU acceleration

  • Hybrid search

  • Data partitioning

  • PyTorch

    Integration with PyTorch

  • TensorFlow

    Integration with TensorFlow

  • Hugging Face

    Integration with Hugging Face

  • LangChain

    Integration with LangChain

  • LlamaIndex

    Integration with LlamaIndex

  • Linux support

    Available on linux

  • Mac support

    Available on mac

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

How much does Milvus cost?

Milvus is open-source and free to use and modify. The self-hosted version has no licensing cost. Zilliz Cloud (the managed SaaS version) does not publish pricing on the website.

Source
Is there a free or open-source version of Milvus?

Yes, Milvus is fully open-source and available for free. Milvus Lite is a lightweight option for learning and prototyping that can be installed via pip.

Source
Does Milvus offer a managed cloud service?

Yes, Zilliz Cloud is a fully managed Milvus cloud offering with serverless and dedicated cluster options. Pricing must be requested from the company as it is not listed on the public website.

Source

Behind it

Who makes Milvus

Company
Zilliz
Based in
Redwood City, California
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Softwr does not host reviews and shows no star rating for Milvus, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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