Open Policy Agent vs Polaris: 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 Open Policy Agent and Polaris side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a 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:
Open Policy Agent
Unify policy enforcement across your entire software stack with a high-performance policy engine.
Best for you if:
- • You want a fully free tool (Polaris requires payment)
Polaris
An open-source policy engine for Kubernetes to ensure configuration best practices.
Best for you if:
- • You want open-source and free to use
| At a Glance | Open Policy Agent | Polaris |
|---|---|---|
Starts at | Free 100% free | Free plan |
Category | Security DevOps | Cloud & Infrastructure Security |
Rating | n/a | 4.3/5 Trustpilot 4.5 · SourceForge 4.3 · G2 3.5 311 reviews |
Free plan | Yes | Yes |
Choose Open Policy Agent or Polaris?
Choose Open Policy Agent if
- You want a fully free tool (Polaris requires payment)
- You want unifies policy enforcement across diverse systems
- You want enhances developer productivity by externalizing policy
- You work in security, not cloud & infrastructure
Choose Polaris if
- You want open-source and free to use
- You want automates policy enforcement, reducing manual effort
- You work in cloud & infrastructure, not security
In-Depth Analysis
Open Policy Agent
Unify policy enforcement across your entire software stack with a high-performance policy engine.
Strengths
- Pro: Unifies policy enforcement across diverse systems
- Pro: Enhances developer productivity by externalizing policy
- Pro: Provides detailed audit trails for compliance and debugging
- Pro: High performance due to Rego language and in-memory data processing
- Pro: Flexible and extensible for a wide range of use cases
Weaknesses
- Con: Requires learning a new declarative language (Rego)
- Con: Initial setup and integration can be complex for new users
- Con: Policy management can become intricate for very large and complex organizations
Key features
Polaris
An open-source policy engine for Kubernetes to ensure configuration best practices.
Polaris offers a very generous free tier, providing essential Kubernetes policy and best practice tools at no cost, making it highly accessible for small teams.
Strengths
- Pro: Open-source and free to use
- Pro: Automates policy enforcement, reducing manual effort
- Pro: Improves Kubernetes cluster security and stability
- Pro: Flexible with custom policy creation
- Pro: Comes with a comprehensive set of built-in policies
Weaknesses
- Con: Requires familiarity with Kubernetes configurations and JSON for custom policies
- Con: Primarily focused on Kubernetes, not a general-purpose policy engine
Key features
Plans and prices: Open Policy Agent vs Polaris
| Tool | Plans and prices | Source |
|---|---|---|
| Open Policy Agent | No plan prices on file | openpolicyagent.org |
| Polaris |
| fairwinds.com/pricing read Oct 4, 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 Open Policy Agent pricing and Polaris pricing.
Key Takeaways
Open Policy Agent
- Choose if you want unify policy enforcement across your entire software stack with a high-performance policy engine
Polaris
- Choose if you want an open-source policy engine for Kubernetes to ensure configuration best practices
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Only Polaris has a published user rating (4.3/5 from 311 reviews); Open Policy Agent has none we can show.
- Both have 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 Open Policy Agent and Polaris compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Only Polaris has a published user rating (4.3/5 from 311 reviews); Open Policy Agent has none we can show. Both have a free plan.
What are Open Policy Agent and Polaris used for?
Open Policy Agent: Unify policy enforcement across your entire software stack with a high-performance policy engine. Polaris: An open-source policy engine for Kubernetes to ensure configuration best practices.
What does Open Policy Agent cost vs Polaris?
Open Policy Agent is free. Polaris has no public paid-plan price on file. Prices read on the vendors' pricing pages, latest check Oct 4, 2026.
What's the main difference between Open Policy Agent and Polaris?
Open Policy Agent's main strength: unifies policy enforcement across diverse systems. Polaris's main strength: open-source and free to use.