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Machine Learning · head to head

Milvus vs Odoo Inventory

Milvus logo

Milvus

Machine Learning

Open-source vector database for scalable similarity search

From
Free
Rated
-
Full reviewWebsite
Odoo Inventory logo

Odoo Inventory

Inventory

Open source inventory management module

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Milvus vector dimensions are capped at 32,768; Odoo Inventory the One App Free plan covers a single app, so using Inventory alongside another Odoo app moves the account onto a paid plan
  • They diverge on capability: Milvus covers Billion-scale vectors, Odoo Inventory covers Inventory management.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Milvus and Odoo Inventory actually diverge.

Attributes where Milvus and Odoo Inventory differ
AttributeMilvusOdoo Inventory
Pricing modelfreemiumsubscription
PlatformsLinux, Mac, Windows, WebWeb, Mobile app, Cloud/On-premise
CategoryMachine LearningInventory
Founded20172005

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Milvus

  • Billion-scale vectors
  • Multiple index types
  • GPU acceleration
  • Hybrid search
  • Data partitioning
  • PyTorch
  • TensorFlow
  • Hugging Face

Only in Odoo Inventory

  • Inventory management
  • Barcode scanning
  • Multi-warehouse
  • Automated replenishment
  • Odoo ERP modules
  • E-commerce
  • Manufacturing
  • Accounting

Both cover

  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Milvus

  • Self hosting a vector database for semantic searchnot Odoo Inventory
  • Storing and querying embeddings for retrieval augmented generationnot Odoo Inventory
  • Similarity search over images, audio or text at scalenot Odoo Inventory

Odoo Inventory

  • Tracking stock across multiple warehouses and locationsnot Milvus
  • Running receipts, deliveries and internal transfersnot Milvus
  • Connecting inventory to Odoo sales, purchasing and manufacturingnot Milvus

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

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

Odoo Inventory

  • The One App Free plan covers a single app, so using Inventory alongside another Odoo app moves the account onto a paid plan
  • The Standard plan at $16.90 per user per month is restricted to Odoo Online hosting
  • Odoo.sh and on premise hosting require the Custom plan at $25.50 per user per month
  • Odoo Studio, multi company management and external API access require the Custom plan
  • Billing is per user, defined as any employee with backend access to create, view or edit documents
  • The advertised discounted rates apply for the first 12 months, after which the list rates of $21.10 and $31.90 per user per month apply

Pricing, plan by plan

Milvus

Free
  • Open SourceFree
    • Full features
    • Self-hosted
    • Community support
  • Zilliz CloudFree
    • Managed service
    • Free tier available

Odoo Inventory

Free
  • CommunityFree
    • Open source
    • Basic features
    • Community support
  • Standard$20/month
    • Full features
    • Hosting included
    • Email support
  • Custom$40/month
    • Customization
    • Studio access
    • Priority support

Which should you pick?

Choose Milvus if

  • You need billion-scale vectors.
  • You want to start without paying.
  • You work on Linux, Mac, Windows, Web.
  • You also want multiple index types.
Milvus review

Choose Odoo Inventory if

  • You need inventory management.
  • You want to start without paying.
  • You work on Web, Mobile app, Cloud/On-premise.
  • You also want barcode scanning.
Odoo Inventory review

Questions people ask

Is Milvus or Odoo Inventory better?
Neither clearly leads. Milvus starts at Free and Odoo Inventory at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Milvus or Odoo Inventory?
Milvus starts at Free and Odoo Inventory at Free.
Does Milvus or Odoo Inventory run on more platforms?
Milvus runs on Linux, Mac, Windows, Web. Odoo Inventory runs on Web, Mobile app, Cloud/On-premise.
Can I use Milvus for free?
Both have a free tier, so you can try either at no cost before committing.
What is Milvus best used for?
Milvus is most often used 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. Of those, self hosting a vector database for semantic search and storing and querying embeddings for retrieval augmented generation are not what Odoo Inventory is typically brought in for.
What can Milvus do that Odoo Inventory cannot?
Milvus covers Billion-scale vectors, Multiple index types, GPU acceleration, Hybrid search. Odoo Inventory covers Inventory management, Barcode scanning, Multi-warehouse, Automated replenishment. Both handle Web support.

Answered from the vendors’ own pages

Milvus: 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
Odoo Inventory: How much does the Odoo Inventory app cost?

The Odoo Inventory app is free, forever, with unlimited users at no cost. Additional costs only apply if you install other applications in the Odoo suite.

Source
Milvus: 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
Odoo Inventory: Do I need to pay to use Odoo Inventory?

No, Odoo Inventory is completely free with no credit card required to start. The free trial and app remain free indefinitely.

Source
Milvus: 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
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