Clerk 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 Clerk 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:
Clerk
Authentication for modern apps
Best for you if:
- • You want beautiful UI components
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 | Clerk | Oso |
|---|---|---|
Starts at | Free plan, paid from $20/mo, billed yearly Pro plan | Free plan, paid from $500/mo, billed monthly Startup plan |
Category | Identity & Access Developer Tools | Identity & Access Security |
Rating | 4.8/5 G2 4.8 126 reviews | n/a |
Free plan | Yes | Yes |
Watch out for | SMS authentication costs $0.01 per message (US/CA), adds up for MFA-heavy apps | n/a |
Choose Clerk or Oso?
Choose Clerk if
- You want beautiful UI components
- You want easy setup
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
In-Depth Analysis
Clerk
Authentication for modern apps
Clerk offers the most developer-friendly auth with 50K free users, enough for most startups to reach revenue before paying.
Watch out
SMS authentication costs $0.01 per message (US/CA), adds up for MFA-heavy apps
Strengths
- Pro: Beautiful UI components
- Pro: Easy setup
- Pro: Great DX
Weaknesses
- Con: Vendor lock-in
- Con: Pricing can add up
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: Clerk vs Oso
| Tool | Plans and prices | Source |
|---|---|---|
| Clerk |
| clerk.com/pricing read Oct 18, 2026 |
| 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 Clerk pricing and Oso pricing.
Key Takeaways
Clerk
- Choose if you want authentication for modern apps
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.
- Only Clerk has a published user rating (4.8/5 from 126 reviews); Oso has none we can show.
- Entry prices are not ranked, they are charged on different bases: Clerk $20/mo, billed yearly; Oso $500/mo, billed monthly.
- 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 Clerk 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. Only Clerk has a published user rating (4.8/5 from 126 reviews); Oso has none we can show. Entry prices are not ranked, they are charged on different bases: Clerk $20/mo, billed yearly; Oso $500/mo, billed monthly. Both have a free plan.
What are Clerk and Oso used for?
Clerk: Authentication for modern apps. Oso: Secure and authorize AI agents and applications with fine-grained controls and audit trails.
What does Clerk cost vs Oso?
Clerk's cheapest paid plan is Pro at $20/mo, billed yearly; it also has a free plan. 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 18, 2026.
What's the main difference between Clerk and Oso?
Clerk's main strength: beautiful UI components. Oso's main strength: prevents sensitive data leaks and unauthorized infrastructure modifications by AI agents.