Is Galileo or Weka better?

Neither clearly leads. Galileo starts at Free and Weka at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Galileo or Weka?

Galileo starts at Free and Weka at Free.

Does Galileo or Weka run on more platforms?

Galileo runs on web, api. Weka runs on Linux, Mac, Windows.

Can I use Galileo for free?

Both have a free tier, so you can try either at no cost before committing.

What is Galileo best used for?

Galileo is most often used for evaluating rag and agent applications before production release, monitoring live genai applications for failures and drift, applying real-time guardrails without custom integration work, reducing evaluation costs using distilled luna judge models. Of those, evaluating rag and agent applications before production release and monitoring live genai applications for failures and drift are not what Weka is typically brought in for.

What can Galileo do that Weka cannot?

Galileo covers Pre-built evaluations, Ground truth capture, Luna models, Agent behavior analysis. Weka covers Classification, Regression, Clustering, Association rules.

AI · head to head

Galileo vs Weka

Galileo

Evaluation and observability platform for GenAI applications and agents

From: Free
Free plan: Yes

Full review Website

Weka

Machine Learning

Collection of machine learning algorithms

From: Free
Free plan: Yes

Full review Website

The short version

Each has a real cost: Galileo the free plan is limited to 5,000 traces per month, which is quickly outgrown by production workloads.; Weka the package management system needs an internet connection to download and install packages, so an air-gapped install gets only the core distribution
They diverge on capability: Galileo covers Pre-built evaluations, Weka covers Classification.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Galileo and Weka actually diverge.

Attributes where Galileo and Weka differ
Attribute	Galileo	Weka
Pricing model	freemium	open-source
Platforms	web, api	Linux, Mac, Windows
Category	AI	Machine Learning
Founded	Unknown	1993

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 Galileo

Pre-built evaluations
Ground truth capture
Luna models
Agent behavior analysis
Production guardrails
Flexible deployment

Only in Weka

Classification
Regression
Clustering
Association rules
Feature selection
Java
R
Python

What people use each for

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

Galileo

Evaluating RAG and agent applications before production releasenot Weka
Monitoring live GenAI applications for failures and driftnot Weka
Applying real-time guardrails without custom integration worknot Weka
Reducing evaluation costs using distilled Luna judge modelsnot Weka

Weka

Teaching and exploring classic machine learning algorithms through a GUInot Galileo
Running data mining experiments and preprocessing without writing codenot Galileo

Where each one falls short

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

Galileo

The free plan is limited to 5,000 traces per month, which is quickly outgrown by production workloads.
Real-time guardrails and unlimited trace capacity are reserved for the custom-priced Enterprise tier.
Pro plan pricing scales with trace volume, so costs can grow unpredictably as usage increases.
On-premises deployment requires an Enterprise contract rather than being available self-serve.

Weka

The package management system needs an internet connection to download and install packages, so an air-gapped install gets only the core distribution
Weka is split into a stable 3.8 branch that receives only bug fixes and compatibility-safe upgrades and a 3.9 development branch that may receive features that break compatibility
Weka requires a 64-bit Java VM; the bundled installers ship Bellsoft OpenJDK 25 per platform and architecture

Pricing, plan by plan

Galileo

Free

FreeFree
- 5,000 traces/month
- Unlimited users
- Unlimited custom evaluations
Pro$100/month
- 50,000 traces/month
- Standard role-based access control
- Advanced analytics and insights
Enterprise$undefined/mo
- Unlimited trace capacity
- Custom rate limits
- Hosted, VPC, or on-prem deployment

Weka

Free

Open SourceFree
- All ML algorithms
- GUI and CLI
- Java API

Which should you pick?

Choose Galileo if

You need pre-built evaluations.
You want to start without paying.
You work on web, api.
You also want ground truth capture.

Galileo review

Choose Weka if

You need classification.
You want to start without paying.
You work on Linux, Mac, Windows.
You also want regression.

Weka review

Questions people ask

Is Galileo or Weka better?: Neither clearly leads. Galileo starts at Free and Weka at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Galileo or Weka?: Galileo starts at Free and Weka at Free.
Does Galileo or Weka run on more platforms?: Galileo runs on web, api. Weka runs on Linux, Mac, Windows.
Can I use Galileo for free?: Both have a free tier, so you can try either at no cost before committing.
What is Galileo best used for?: Galileo is most often used for evaluating rag and agent applications before production release, monitoring live genai applications for failures and drift, applying real-time guardrails without custom integration work, reducing evaluation costs using distilled luna judge models. Of those, evaluating rag and agent applications before production release and monitoring live genai applications for failures and drift are not what Weka is typically brought in for.
What can Galileo do that Weka cannot?: Galileo covers Pre-built evaluations, Ground truth capture, Luna models, Agent behavior analysis. Weka covers Classification, Regression, Clustering, Association rules.

Answered from the vendors’ own pages

Galileo: What does Galileo cost?

Galileo offers a free plan, a Pro plan at $100/month billed yearly (with a 33% annual discount), and a custom-priced Enterprise plan for unlimited trace capacity.

Source

Weka: What is the cost of Weka software?

Weka is provided at no cost as open-source software released under the GNU General Public License, making it freely available for download and use.

Source

Galileo: Is there a free plan, and what are its limits?

The Free plan includes 5,000 traces per month with unlimited users and unlimited custom evaluations, aimed at developers and small teams experimenting with GenAI.

Source

Weka: Are there commercial licensing options available?

Yes, the project offers information about commercial licenses for organizations requiring non-GPL terms, which can be found in their commercial applications documentation.

Source

Galileo: How is usage metered?

Galileo's pricing scales based on the number of traces processed each month, with Free capped at 5,000, Pro at 50,000, and Enterprise offering unlimited trace capacity.

Source

Weka: What support resources are available to users?

Multiple support avenues exist including comprehensive documentation, frequently asked questions, dedicated help resources, and access to courses for learning the platform.

Source

Weka: Is source code access provided?

Yes, developers have full access to source code through the Git repository, along with development documentation and code credits for contributors.

Source

Galileo vs Weka

Galileo

Weka

The short version

Where they differ

What each one covers

Only in Galileo

Only in Weka

What people use each for

Galileo

Weka

Where each one falls short

Galileo

Weka

Pricing, plan by plan

Galileo

Weka

Which should you pick?

Choose Galileo if

Choose Weka if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Galileo

More on Weka

Keep looking

Other head to heads