Boundary vs Duo Security: 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 Boundary and Duo Security 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:
Boundary
Securely access any system from anywhere based on user identity.
Best for you if:
- • You want enhances security by granting access based on user identity and role
Duo Security
Multi-factor authentication for enterprises
Best for you if:
- • You want enterprise MFA leader
| At a Glance | Boundary | Duo Security |
|---|---|---|
Starts at | Free plan | Free plan, paid from $3/user/mo, billed monthly Essentials plan |
Category | Security Identity & Access | Identity & Access Security |
Rating | n/a | 4.6/5 Capterra 4.7 · G2 4.5 1,051 reviews |
Free plan | Yes | Yes |
Choose Boundary or Duo Security?
Choose Boundary if
- You want enhances security by granting access based on user identity and role
- You want simplifies remote access to cloud and on-premise infrastructure
- You work in security, not identity & access
Choose Duo Security if
- You want enterprise MFA leader
- You want good security
- You work in identity & access, not security
In-Depth Analysis
Boundary
Securely access any system from anywhere based on user identity.
Strengths
- Pro: Enhances security by granting access based on user identity and role.
- Pro: Simplifies remote access to cloud and on-premise infrastructure.
- Pro: Automates infrastructure onboarding with service discovery.
- Pro: Provides comprehensive audit trails and session visibility for compliance.
- Pro: Integrates with popular identity providers and HashiCorp Vault.
Weaknesses
- Con: Requires integration and configuration with existing identity providers and infrastructure.
- Con: Learning curve for new users, especially with advanced features like Vault integration.
Key features
Duo Security
Multi-factor authentication for enterprises
Duo Security's pricing is fair, offering a generous free tier for up to 10 users.
Strengths
- Pro: Enterprise MFA leader
- Pro: Good security
- Pro: Easy setup
- Pro: Many integrations
- Pro: Cisco backing
Weaknesses
- Con: Expensive
- Con: Cisco pricing complexity
- Con: Per-user costs
- Con: UI dated
- Con: Better free alternatives
Key features
Plans and prices: Boundary vs Duo Security
| Tool | Plans and prices | Source |
|---|---|---|
| Boundary | No plan prices on file | boundaryproject.io |
| Duo Security |
| duo.com/pricing read Oct 31, 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 Boundary pricing and Duo Security pricing.
Key Takeaways
Boundary
- Choose if you want securely access any system from anywhere based on user identity
Duo Security
- Choose if you want multi-factor authentication for enterprises
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 Duo Security has a published user rating (4.6/5 from 1,051 reviews); Boundary has none we can show.
- Duo Security starts at $3/user/mo, billed monthly; Boundary 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 Boundary and Duo Security 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 Duo Security has a published user rating (4.6/5 from 1,051 reviews); Boundary has none we can show. Duo Security starts at $3/user/mo, billed monthly; Boundary has no public paid plan price on file. Both have a free plan.
What are Boundary and Duo Security used for?
Boundary: Securely access any system from anywhere based on user identity. Duo Security: Multi-factor authentication for enterprises.
What does Boundary cost vs Duo Security?
Boundary has no public paid-plan price on file. Duo Security's cheapest paid plan is Essentials at $3/user/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 31, 2026.
What's the main difference between Boundary and Duo Security?
Boundary's main strength: enhances security by granting access based on user identity and role. Duo Security's main strength: enterprise MFA leader.