kitio.aiMetaflow vs Polyaxon
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Metaflow is completely free, while Polyaxon is freemium.
Open-source control plane for ML training, serving and agents on Kubernetes
Freemium · $555/moAt a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Workflows in plain Python
- Automatic versioning
- One-command production deploy
- Cloud compute and GPUs
- Event-based triggers
- Training and fine-tuning jobs
- Hyperparameter sweeps and DAGs
- Model serving and notebooks
- Experiment tracking and registry
- Agent sandboxes
- Access policies and audit logs
| Feature | Metaflow | Polyaxon |
|---|---|---|
| Best for | Open-source Python framework for ML and AI workflows | Open-source control plane for ML training, serving and agents on Kubernetes |
| Category | Models & APIs | Models & APIs |
| Pricing model | Free | Freemium |
| Starting price | Free | $555/mo |
| Free plan | Yes, fully free | Yes |
| Made by | Outerbounds | Polyaxon |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Metaflow is completely free, while Polyaxon is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Open Source
Free
- Self-hosted
- Core tracking and scheduling
Platform
$555/mo
- 3 developer seats
- 1 compute cluster
- 50 concurrent runs
- Collaboration features
Teams
$1500/mo
- 6 developer seats
- 2 compute clusters
- Teams management
- Priority support
Enterprise
Custom
- Custom seats
- Custom policies and deployment
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Metaflow
- Free and open source
- Same code runs locally and in production
- Tracks every step automatically
- Requires Python skills
- Cloud setup takes effort
Polyaxon
- Self-hosted, data stays on your infra
- Covers training, serving and tracking
- Free for academics
- Paid plans start at a high price
- Requires Kubernetes expertise
- Extra seats and clusters cost more
Which one should you choose?
Choose Metaflow if you want:
- Free and open source
- Same code runs locally and in production
- Tracks every step automatically
Watch out: requires python skills.
Choose Polyaxon if you want:
- Self-hosted, data stays on your infra
- Covers training, serving and tracking
- Free for academics
Watch out: paid plans start at a high price.
Metaflow vs Polyaxon FAQ
What is the difference between Metaflow and Polyaxon?
Metaflow: Open-source Python framework for ML and AI workflows. Polyaxon: Open-source control plane for ML training, serving and agents on Kubernetes. Both are models & apis tools.
Is Metaflow or Polyaxon cheaper?
Metaflow is completely free, while Polyaxon is freemium.
Do Metaflow and Polyaxon have free plans?
Metaflow: Yes, fully free. Polyaxon: Yes.
Who makes Metaflow?
Metaflow is made by Outerbounds.
Who makes Polyaxon?
Polyaxon is made by Polyaxon.
Which should I choose, Metaflow or Polyaxon?
Choose Metaflow if you value free and open source and same code runs locally and in production. Choose Polyaxon if you value self-hosted, data stays on your infra and covers training, serving and tracking.