Cerbos vs OPA Gatekeeper: Which is Better in 2026?
Choosing between Cerbos and OPA Gatekeeper 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.
Bottom line: Cerbos wins this matchup. Our overall Security pick is 1Password. Our free Security pick is Intruder. Pick OPA Gatekeeper if you need DevOps.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Cerbos
Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.
Best for you if:
- • You want significantly accelerates time to market for new roles and permissions
- • You want reduces AI security risks by preventing over-permissioning and shadow access
OPA Gatekeeper
Enforce policies and governance for Kubernetes clusters using Open Policy Agent.
Best for you if:
- • You want leverages the powerful and flexible Rego policy language
- • You want provides centralized policy management for Kubernetes
| At a Glance | Cerbos | |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Security | DevOps |
Rating | 4.9/5 | 4.5/5 |
Free plan | Yes | Yes |
Choose Cerbos or OPA Gatekeeper?
Choose Cerbos if
Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.
- You want significantly accelerates time to market for new roles and permissions
- You want reduces AI security risks by preventing over-permissioning and shadow access
- Your work is security-shaped, not DevOps-shaped
Choose OPA Gatekeeper if
Enforce policies and governance for Kubernetes clusters using Open Policy Agent.
- You want leverages the powerful and flexible Rego policy language
- You want provides centralized policy management for Kubernetes
- Your work is DevOps-shaped, not security-shaped
| Feature | Cerbos | OPA Gatekeeper |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.9/5 6 reviews | ★4.5/5 89 reviews |
| Categories | SecurityDeveloper Tools | DevOpsSecurity |
In-Depth Analysis
Cerbos
Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.
Cerbos offers a generous free tier and a Proof of Concept plan, making it highly accessible for evaluation and small-scale use.
Watch out
Overage fees for monthly active principals
Strengths
- +Significantly accelerates time to market for new roles and permissions.
- +Reduces AI security risks by preventing over-permissioning and shadow access.
- +Offers substantial cost reduction by eliminating custom authorization infrastructure.
- +Provides comprehensive audit logs for compliance and visibility into security posture.
- +Supports a wide range of programming languages and deployment environments.
Weaknesses
- -Pricing for higher tiers can be significant for large enterprises.
- -Requires integration into existing applications and infrastructure, which may involve initial setup effort.
Key features
OPA Gatekeeper
Enforce policies and governance for Kubernetes clusters using Open Policy Agent.
Strengths
- +Leverages the powerful and flexible Rego policy language
- +Provides centralized policy management for Kubernetes
- +Enhances security and compliance posture of clusters
- +Prevents misconfigurations before they are applied
- +Open-source and community-driven
Weaknesses
- -Requires learning Rego for complex policies
- -Can add latency to API requests if policies are complex
- -Initial setup and policy definition can be challenging for beginners
Key features
Pricing: Cerbos vs OPA Gatekeeper
| Plan | Cerbos | OPA Gatekeeper |
|---|---|---|
| Tier 1 | Free forever Open source | N/A |
| Tier 2 | $0/month Proof of Concept | N/A |
| Tier 3 | From $25/month Development | N/A |
| Tier 4 | From $933/month Production | N/A |
| Tier 5 | Contact us Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Cerbos pricing and OPA Gatekeeper pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Cerbos
Want the highest-rated option?
Cerbos: 4.9/5 (6 reviews). OPA Gatekeeper: 4.5/5 (89 reviews).
Go with: Cerbos
Value user reviews?
Cerbos: 6 reviews (4.9/5). OPA Gatekeeper: 89 reviews (4.5/5).
Go with: OPA Gatekeeper
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Cerbos is a security tool. OPA Gatekeeper is in DevOps. Pick the category that matches your needs.
How important are ratings?
Cerbos is rated higher: 4.9/5 vs 4.5/5.
Key Takeaways
Cerbos
- Higher user rating: 4.9/5 vs 4.5/5
- Free tier available
- Our pick for this comparison
OPA Gatekeeper
- Larger review base (89 reviews)
- Better fit for DevOps
The Bottom Line
Cerbos wins this matchup. Our overall Security pick is 1Password. Our free Security pick is Intruder.
Frequently Asked Questions
Is Cerbos or OPA Gatekeeper better?
Cerbos is rated in our evaluation. Both are freemium.
What are Cerbos and OPA Gatekeeper used for?
Cerbos: Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.. OPA Gatekeeper: Enforce policies and governance for Kubernetes clusters using Open Policy Agent..
What does Cerbos cost vs OPA Gatekeeper?
Cerbos is freemium (free tier + paid plans). OPA Gatekeeper is freemium (free tier + paid plans). Visit their websites for detailed pricing.