Keel 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 Keel 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:
Keel
Enforce action-level rules before AI agents execute calls
Best for you if:
- • Teams whose agents take consequential actions (payments, writes, messages) and who must show afterward that each action was authorized
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 | Keel | Oso |
|---|---|---|
Starts at | Free 100% free | Free plan, paid from $500/mo, billed monthly Startup plan |
Category | Security Identity & Access | Identity & Access Security |
Rating | n/a | n/a |
Free plan | Yes | Yes |
Choose Keel or Oso?
Choose Keel if
- Teams whose agents take consequential actions (payments, writes, messages) and who must show afterward that each action was authorized
- You want a fully free tool (Oso requires payment)
- You want decides on the specific action and its arguments, not just the agent's identity
- You want a review holds the action until a person approves that exact request
- 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
Keel
Enforce action-level rules before AI agents execute calls
Keel is currently free with no paid tiers, which is extremely generous compared to competitors that charge per seat or per action.
Strengths
- Pro: Decides on the specific action and its arguments, not just the agent's identity
- Pro: A review holds the action until a person approves that exact request
- Pro: Works alongside your identity provider, gateway and observability tools
- Pro: Open AI Permit specification (Apache-2.0) and MIT-licensed verifier
Weaknesses
- Con: Covers only actions routed through Keel; agents and tools it can't see aren't governed
- Con: Requires integrating Keel's SDK or API; it isn't a drop-in agent
- Con: A product from a small team
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: Keel vs Oso
| Tool | Plans and prices | Source |
|---|---|---|
| Keel | No plan prices on file | keelapi.com/pricing |
| Oso |
| osohq.com/pricing read Oct 27, 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 Keel pricing and Oso pricing.
Key Takeaways
Keel
- Choose if you want enforce action-level rules before AI agents execute calls
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; Keel 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 Keel 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; Keel has no public paid plan price on file. Both have a free plan.
What are Keel and Oso used for?
Keel: Enforce action-level rules before AI agents execute calls. Oso: Secure and authorize AI agents and applications with fine-grained controls and audit trails.
What does Keel cost vs Oso?
Keel 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 27, 2026.
What's the main difference between Keel and Oso?
Keel's main strength: decides on the specific action and its arguments, not just the agent's identity. Oso's main strength: prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents.