MLflow vs Weights & Biases: Which Should You Choose in 2026?
Choosing between MLflow and Weights & Biases comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
MLflow
Open-source MLOps platform
Best for you if:
- • You need something completely free
- • You need workflow automation features specifically
- • ML experiment tracking and versioning
- • Log metrics, parameters, and artifacts
Weights & Biases
ML experiment tracking
Best for you if:
- • You want the higher-rated option (8.8/10 vs 8.6/10)
- • You need data visualization features specifically
- • MLOps platform for experiment tracking
- • Visualize and compare ML training runs
| At a Glance |  MLflow |  Weights & Biases |
|---|---|---|
Price | Free | Free + Paid |
Best For | Workflow Automation | Data Visualization |
Rating | 86/100 | 88/100 |
| Feature | MLflow | Weights & Biases |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | 86 | 88 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 108 |
| Categories | Workflow AutomationAI Model Deployment | Data VisualizationAI Model Deployment |
How MLflow and Weights & Biases Compare
MLflow
Open-source MLOps platform
Free · 86/100 score
Weights & Biases
ML experiment tracking
Free tier available · 88/100 score
MLflow is a workflow automation tool. Weights & Biases is in data visualization.
Who Should Use What?
On a budget?
MLflow is free. Weights & Biases is freemium.
Go with: MLflow
Want the highest-rated option?
MLflow: 86/100. Weights & Biases: 88/100.
Go with: Weights & Biases
Value user reviews?
Neither has user reviews yet.
Go with: Weights & Biases
3 Questions to Help You Decide
What's your budget?
MLflow is free. Weights & Biases is freemium. Go with MLflow if free matters most.
What's your use case?
MLflow is a workflow automation tool. Weights & Biases is in data visualization. Pick the category that matches your needs.
How important are ratings?
Weights & Biases scores higher: 88/100 vs 86/100.
Key Takeaways
Weights & Biases
- Higher score: 88/100 vs 86
- More community upvotes (108)
- Free tier available
- Our pick for this comparison
MLflow
- Completely free
- Better fit for workflow automation
The Bottom Line
Weights & Biases (88/100) is our pick. That said, MLflow is free — hard to beat on price.
Frequently Asked Questions
Is MLflow or Weights & Biases better?
Weights & Biases scores 88/100 in our evaluation. MLflow is free and Weights & Biases is freemium.
What are MLflow and Weights & Biases used for?
MLflow: Open-source MLOps platform. Weights & Biases: ML experiment tracking.
What does MLflow cost vs Weights & Biases?
MLflow is completely free. Weights & Biases is freemium (free tier + paid plans). Visit their websites for detailed pricing.