Softwr

Machine Learning · head to head

Milvus vs OpenSCAD

Milvus logo

Milvus

Machine Learning

Open-source vector database for scalable similarity search

From
Free
Rated
-
Full reviewWebsite
OpenSCAD logo

OpenSCAD

CAD

The programmers solid 3D CAD modeler

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Milvus vector dimensions are capped at 32,768; OpenSCAD script-based workflow, not interactive design interface
  • They diverge on capability: Milvus covers Billion-scale vectors, OpenSCAD covers Script-based modeling.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Milvus and OpenSCAD actually diverge.

Attributes where Milvus and OpenSCAD differ
AttributeMilvusOpenSCAD
Pricing modelfreemiumfree
PlatformsLinux, Mac, Windows, WebWindows, macOS, Linux, WebAssembly
CategoryMachine LearningCAD
Founded20172009

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 OpenSCAD

  • Script-based modeling
  • CSG operations
  • 2D to 3D extrusion
  • Parameterization
  • STL export
  • Preview
  • 3D printers
  • Slicers

Both cover

  • Linux support
  • Windows 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 OpenSCAD
  • Storing and querying embeddings for retrieval augmented generationnot OpenSCAD
  • Similarity search over images, audio or text at scalenot OpenSCAD

OpenSCAD

  • Parametric 3D design for manufacturing and 3D printingnot Milvus
  • Technical design with scripted control over geometrynot Milvus
  • Procedural model generationnot 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

OpenSCAD

  • Script-based workflow, not interactive design interface
  • Limited to constructive solid geometry and 2D extrusion modelling
  • Not suitable for artistic 3D modelling or computer animation
  • Complex build dependencies (Qt, CGAL, Boost)

Pricing, plan by plan

Milvus

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

OpenSCAD

Free

No published plan breakdown. See the OpenSCAD review.

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 OpenSCAD if

  • You need script-based modeling.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, WebAssembly.
  • You also want csg operations.
OpenSCAD review

Questions people ask

Is Milvus or OpenSCAD better?
Neither clearly leads. Milvus starts at Free and OpenSCAD at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Milvus or OpenSCAD?
Milvus starts at Free and OpenSCAD at Free.
Does Milvus or OpenSCAD run on more platforms?
Milvus runs on Linux, Mac, Windows, Web. OpenSCAD runs on Windows, macOS, Linux, WebAssembly.
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 OpenSCAD is typically brought in for.
What can Milvus do that OpenSCAD cannot?
Milvus covers Billion-scale vectors, Multiple index types, GPU acceleration, Hybrid search. OpenSCAD covers Script-based modeling, CSG operations, 2D to 3D extrusion, Parameterization. Both handle Linux support, Windows 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
OpenSCAD: What is the cost of OpenSCAD?

OpenSCAD is free software with no licensing fees, subscriptions, or costs of any kind. The software is available as open-source with no restrictions on commercial or non-commercial use.

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
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
Share

Related pages

More on Milvus

More on OpenSCAD

Keep looking

Other head to heads