Comet ML vs MLflow: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Comet ML and MLflow side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, MLflow leads on a free plan. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Comet ML
Machine learning experiment tracking platform
Best for you if:
- • You want experiment tracking
MLflow
Manage your ML lifecycle: track, register, and deploy models
Best for you if:
- • You want a fully free tool (Comet ML requires payment)
| At a Glance | Comet ML | MLflow |
|---|---|---|
Starts at | From $19/user/mo, billed monthly Pro plan | Free 100% free |
Category | Analytics Developer Tools | Analytics Developer Tools |
Rating | 4.3/5 G2 4.3 26 reviews | 4.3/5 SourceForge 4.3 67 reviews |
Free plan | No | Yes |
Watch out for | Overage fees for training hours on Pro tier | n/a |
Choose Comet ML or MLflow?
Choose Comet ML if
- You want experiment tracking
- You want model production monitoring
Choose MLflow if
- You want a fully free tool (Comet ML requires payment)
- You want open source
- You want experiment tracking
In-Depth Analysis
Comet ML
Machine learning experiment tracking platform
Comet ML's pricing is quite generous, especially with a robust Free tier offering 100GB storage and core tracking.
Watch out
Overage fees for training hours on Pro tier
Strengths
- Pro: Experiment tracking
- Pro: Model production monitoring
- Pro: Good visualizations
- Pro: Fair pricing
- Pro: LLM support
Weaknesses
- Con: Less known
- Con: Smaller community
- Con: Some features basic
- Con: Documentation gaps
- Con: Integration limitations
Key features
MLflow
Manage your ML lifecycle: track, register, and deploy models
MLflow's open-source offering is exceptionally generous, being completely free ($0) for self-hosting.
Strengths
- Pro: Open source
- Pro: Experiment tracking
- Pro: Model registry
- Pro: Deployment support
- Pro: Self-hostable
Weaknesses
- Con: UI basic
- Con: Scale limitations
- Con: Setup required
- Con: Databricks dependency growing
- Con: Less modern feel
Key features
Plans and prices: Comet ML vs MLflow
| Tool | Plans and prices | Source |
|---|---|---|
| Comet ML |
| comet.com/pricing read Oct 4, 2026 |
| MLflow |
| mlflow.org read Sep 30, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Comet ML pricing and MLflow pricing.
Key Takeaways
Comet ML
- Choose if you want machine learning experiment tracking platform
MLflow
- Has a free plan
What the data shows
On the data below, MLflow leads on a free plan. We do not name an overall winner for this pair.
- User ratings are within 0.2 points (4.3/5 from 26 reviews for Comet ML, 4.3/5 from 67 reviews for MLflow).
- Comet ML starts at $19/user/mo, billed monthly; MLflow has no public paid plan price on file.
- Only MLflow has a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Comet ML and MLflow compare in 2026?
On the data below, MLflow leads on a free plan. We do not name an overall winner for this pair. User ratings are within 0.2 points (4.3/5 from 26 reviews for Comet ML, 4.3/5 from 67 reviews for MLflow). Comet ML starts at $19/user/mo, billed monthly; MLflow has no public paid plan price on file. Only MLflow has a free plan.
What are Comet ML and MLflow used for?
Comet ML: Machine learning experiment tracking platform. MLflow: Manage your ML lifecycle: track, register, and deploy models.
What does Comet ML cost vs MLflow?
Comet ML's cheapest paid plan is Pro at $19/user/mo, billed monthly. MLflow is free. Prices read on the vendors' pricing pages, latest check Oct 4, 2026.
What's the main difference between Comet ML and MLflow?
Comet ML's main strength: experiment tracking. MLflow's main strength: open source.