smallstep vs Auth0: Which is Better in 2026?
Choosing between smallstep and Auth0 comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
smallstep
Zero-trust access and certificate management
Best for you if:
- • You need security features specifically
- • smallstep is an open-source certificate management platform
- • It provides automated TLS certificates for internal infrastructure
Auth0
Identity platform for developers
Best for you if:
- • You need identity & access features specifically
- • Industry-leading identity platform
- • Authentication and authorization as a service
| At a Glance |  smallstep |  Auth0 |
|---|---|---|
Starts at | Custom/moEnterprise | 35/monthEssentials |
Best For | Security | Identity & Access |
Rating | - | - |
Choose smallstep or Auth0?
Choose smallstep if
Zero-trust access and certificate management
- Zero trust security
- Certificate management
- Open source option
- Your work is security-shaped, not identity & access-shaped
Choose Auth0 if
Identity platform for developers
- Easy integration
- Many features
- Great docs
- Your work is identity & access-shaped, not security-shaped
| Feature | smallstep | Auth0 |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.2/5 10 reviews | ★4.4/5 388 reviews |
| Categories | SecurityDeveloper Tools | Identity & AccessDeveloper Tools |
In-Depth Analysis
smallstep
Zero-trust access and certificate management
Strengths
- +Zero trust security
- +Certificate management
- +Open source option
- +Active development
- +Good documentation
Weaknesses
- -Learning curve
- -Complex setup
- -Enterprise features paid
- -Smaller community
- -Niche use case
Key features
Auth0
Identity platform for developers
Strengths
- +Easy integration
- +Many features
- +Great docs
Weaknesses
- -Expensive at scale
- -Complex pricing
Key features
Pricing: smallstep vs Auth0
| Plan | smallstep | Auth0 |
|---|---|---|
| Tier 1 | Custom Enterprise | 0 forever Free |
| Tier 2 | N/A | 35 /month Essentials |
| Tier 3 | N/A | 240 /month Professional |
| Tier 4 | N/A | Custom /month Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on smallstep pricing and Auth0 pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: smallstep
Want the highest-rated option?
Neither has user reviews yet.
Go with: smallstep
Value user reviews?
Neither has user reviews yet.
Go with: Auth0
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
smallstep is a security tool. Auth0 is in identity & access. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Auth0
- Higher user rating: 4.4/5 vs 4.2/5
- Larger review base (388 reviews)
- Free tier available
- Our pick for this comparison
smallstep
- Better fit for security
The Bottom Line
Auth0 is our pick.
Frequently Asked Questions
Is smallstep or Auth0 better?
Auth0 is rated in our evaluation. Both are freemium.
What are smallstep and Auth0 used for?
smallstep: Zero-trust access and certificate management. Auth0: Identity platform for developers.
What does smallstep cost vs Auth0?
smallstep is freemium (free tier + paid plans). Auth0 is freemium (free tier + paid plans). Visit their websites for detailed pricing.