Oso vs Cerbos: Which is Better in 2026?
Choosing between Oso and Cerbos 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.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Oso
Secure and authorize AI agents and applications with fine-grained controls and audit trails.
Best for you if:
- • Provides a unified authorization layer for AI agents, applications, and humans.
- • Automatically enforces least privilege, monitoring agent actions and detecting anomalous behavior.
Cerbos
Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.
Best for you if:
- • Provides fine-grained, contextual authorization for enterprise software and AI.
- • Offers a complete platform with policy definition, enforcement, and centralized management.
| At a Glance |  Oso |  Cerbos |
|---|---|---|
Starts at | $0/mo/moDeveloper | Free forever/moOpen source |
Best For | Security | Security |
Rating | - | - |
Choose Oso or Cerbos?
Choose Oso if
Secure and authorize AI agents and applications with fine-grained controls and audit trails.
- Prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents.
- Accelerates development of AI applications by providing a proven authorization foundation.
- Offers comprehensive auditing and logging for compliance and accountability.
Choose Cerbos if
Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.
- 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.
| Feature | Oso | Cerbos |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | ★4.9/5 6 reviews |
| Categories | SecurityIdentity & Access | SecurityDeveloper Tools |
In-Depth Analysis
Oso
Secure and authorize AI agents and applications with fine-grained controls and audit trails.
Strengths
- +Prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents.
- +Accelerates development of AI applications by providing a proven authorization foundation.
- +Offers comprehensive auditing and logging for compliance and accountability.
- +Enables proactive security with simulations and real-time anomalous behavior detection.
- +Supports various authorization models (RBAC, ReBAC, ABAC) for flexible policy management.
Weaknesses
- -Requires integration into existing applications and agent workflows.
- -Pricing for higher tiers can be a significant investment for larger organizations.
Key features
Cerbos
Fine-grained, contextual, and continuous authorization for enterprise software and AI systems.
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
Pricing: Oso vs Cerbos
| Plan | Oso | Cerbos |
|---|---|---|
| Tier 1 | $0/mo Developer | Free forever Open source |
| Tier 2 | $500/mo Startup | $0/month Proof of Concept |
| Tier 3 | Custom Enterprise | From $25/month Development |
| Tier 4 | N/A | From $933/month Production |
| Tier 5 | N/A | Contact us Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on Oso pricing and Cerbos pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Oso
Want the highest-rated option?
Neither has user reviews yet.
Go with: Oso
Value user reviews?
Neither has user reviews yet.
Go with: Oso
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?
Both are security tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Oso
- Free tier available
- Our pick for this comparison
Cerbos
- Choose if you want fine-grained, contextual, and continuous authorization for enterprise software and AI systems
The Bottom Line
Oso is our pick.
Frequently Asked Questions
Is Oso or Cerbos better?
Oso is rated in our evaluation. Both are freemium.
What are Oso and Cerbos used for?
Oso: Secure and authorize AI agents and applications with fine-grained controls and audit trails.. Cerbos: Fine-grained, contextual, and continuous authorization for enterprise software and AI systems..
What does Oso cost vs Cerbos?
Oso is freemium (free tier + paid plans). Cerbos is freemium (free tier + paid plans). Visit their websites for detailed pricing.