Open Policy Agent vs Oso: 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 Oso 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 (Oso requires payment)
Oso
Secure and authorize AI agents and applications with fine-grained controls and audit trails.
Best for you if:
- • You want prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents
| At a Glance | Open Policy Agent | Oso |
|---|---|---|
Starts at | Free 100% free | Free plan, paid from $500/mo, billed monthly Startup plan |
Category | Security DevOps | Identity & Access Security |
Rating | n/a | n/a |
Free plan | Yes | Yes |
Choose Open Policy Agent or Oso?
Choose Open Policy Agent if
- You want a fully free tool (Oso requires payment)
- You want unifies policy enforcement across diverse systems
- You want enhances developer productivity by externalizing policy
- You work in security, not identity & access
Choose Oso if
- You want prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents
- You want accelerates development of AI applications by providing a proven authorization foundation
- You work in identity & access, 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
Oso
Secure and authorize AI agents and applications with fine-grained controls and audit trails.
Oso's pricing is fair, offering a generous free Developer tier for basic usage.
Strengths
- Pro: Prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents.
- Pro: Accelerates development of AI applications by providing a proven authorization foundation.
- Pro: Offers comprehensive auditing and logging for compliance and accountability.
- Pro: Enables proactive security with simulations and real-time anomalous behavior detection.
- Pro: Supports various authorization models (RBAC, ReBAC, ABAC) for flexible policy management.
Weaknesses
- Con: Requires integration into existing applications and agent workflows.
- Con: Pricing for higher tiers can be a significant investment for larger organizations.
Key features
Plans and prices: Open Policy Agent vs Oso
| Tool | Plans and prices | Source |
|---|---|---|
| Open Policy Agent | No plan prices on file | openpolicyagent.org |
| Oso |
| osohq.com/pricing read Oct 15, 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 Oso pricing.
Key Takeaways
Open Policy Agent
- Choose if you want unify policy enforcement across your entire software stack with a high-performance policy engine
Oso
- Choose if you want secure and authorize AI agents and applications with fine-grained controls and audit trails
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.
- Oso starts at $500/mo, billed monthly; Open Policy Agent has no public paid plan price on file.
- 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 Oso 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. Oso starts at $500/mo, billed monthly; Open Policy Agent has no public paid plan price on file. Both have a free plan.
What are Open Policy Agent and Oso used for?
Open Policy Agent: Unify policy enforcement across your entire software stack with a high-performance policy engine. Oso: Secure and authorize AI agents and applications with fine-grained controls and audit trails.
What does Open Policy Agent cost vs Oso?
Open Policy Agent is free. Oso's cheapest paid plan is Startup at $500/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 15, 2026.
What's the main difference between Open Policy Agent and Oso?
Open Policy Agent's main strength: unifies policy enforcement across diverse systems. Oso's main strength: prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents.