FusionAuth vs Open Policy Agent: 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 FusionAuth and Open Policy Agent 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:
FusionAuth
Customer identity and access management
Best for you if:
- • You want self-hosted auth
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 (FusionAuth requires payment)
| At a Glance | FusionAuth | Open Policy Agent |
|---|---|---|
Starts at | Free plan, paid from $162/mo flat, billed monthly Starter plan | Free 100% free |
Category | Identity & Access Security | Security DevOps |
Rating | 4.6/5 G2 4.5 · SourceForge 4.7 161 reviews | n/a |
Free plan | Yes | Yes |
Choose FusionAuth or Open Policy Agent?
Choose FusionAuth if
- You want self-hosted auth
- You want good features
- You work in identity & access, not security
Choose Open Policy Agent if
- You want a fully free tool (FusionAuth 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
In-Depth Analysis
FusionAuth
Customer identity and access management
FusionAuth offers a generous free Community tier, making it highly accessible.
Strengths
- Pro: Self-hosted auth
- Pro: Good features
- Pro: SSO support
- Pro: Fair pricing
- Pro: Good documentation
Weaknesses
- Con: Self-hosting complexity
- Con: Learning curve
- Con: Enterprise expensive
- Con: Smaller than Auth0
- Con: Community smaller
Key features
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
Plans and prices: FusionAuth vs Open Policy Agent
| Tool | Plans and prices | Source |
|---|---|---|
| FusionAuth |
| fusionauth.io/pricing read Nov 2, 2026 |
| Open Policy Agent | No plan prices on file | openpolicyagent.org |
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 FusionAuth pricing and Open Policy Agent pricing.
Key Takeaways
FusionAuth
- Choose if you want customer identity and access management
Open Policy Agent
- Choose if you want unify policy enforcement across your entire software stack with a high-performance policy engine
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 FusionAuth has a published user rating (4.6/5 from 161 reviews); Open Policy Agent has none we can show.
- FusionAuth starts at $162/mo flat, 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 FusionAuth and Open Policy Agent 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 FusionAuth has a published user rating (4.6/5 from 161 reviews); Open Policy Agent has none we can show. FusionAuth starts at $162/mo flat, billed monthly; Open Policy Agent has no public paid plan price on file. Both have a free plan.
What are FusionAuth and Open Policy Agent used for?
FusionAuth: Customer identity and access management. Open Policy Agent: Unify policy enforcement across your entire software stack with a high-performance policy engine.
What does FusionAuth cost vs Open Policy Agent?
FusionAuth's cheapest paid plan is Starter at $162/mo flat, billed monthly; it also has a free plan. Open Policy Agent is free. Prices read on the vendors' pricing pages, latest check Nov 2, 2026.
What's the main difference between FusionAuth and Open Policy Agent?
FusionAuth's main strength: self-hosted auth. Open Policy Agent's main strength: unifies policy enforcement across diverse systems.