Clerk vs Fastly: Full Comparison (2026)
Pricing, features, scores, and a clear verdict on which one is right for you.
The bottom line
Clerk positions itself as "authentication built for modern react and next.js apps" while Fastly goes after "real-time cdn and edge computing for high-performance apps" — so the right pick depends on which problem you're actually solving. They take different commercial approaches — Clerk uses a freemium approach and Fastly a usage-based-based model, which affects how costs scale as your team grows. Clerk lets you start for free, which means you can validate the fit before committing budget. Fastly requires a paid commitment upfront, so make sure it matches your workflow before signing. Fastly (founded 2011) has had more time to build out its ecosystem and integrations, while Clerk (2021) tends to move faster on modern UX and newer workflows.
At a glance
| Clerk | Fastly | |
|---|---|---|
| Our score | 85/100 | 76/100 |
| Starting price | Free | $50/mo |
| Free tier | Yes | No |
| Best for | Authentication built for modern React and Next.js apps | Real-time CDN and edge computing for high-performance apps |
Pricing comparison
Calculate your cost
Feature comparison
core
| Feature | Clerk | Fastly |
|---|---|---|
| Pre-built UI components | Yes | No |
| OAuth / OIDC | Yes | No |
| Social login | Yes | No |
| MFA | Yes | No |
| Passkeys | Yes | No |
| CDN | No | Yes |
| DDoS protection | No | Yes |
| Instant cache purge | No | Yes |
| WAF | No | Yes |
| Real-time analytics | No | Yes |
Ratings breakdown
What the data tells us
Key capabilities you'd miss
Choosing Clerk means going without CDN, DDoS protection, Instant cache purge (which Fastly offers). Choosing Fastly means losing Pre-built UI components, OAuth / OIDC, Social login. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.
What company size tells you
Clerk (51-200 employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Fastly (501-1,000 employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.
Choose Clerk if...
- You want a free tier to get started
- You value an intuitive, easy-to-use interface
- Getting strong value for money is a priority
Choose Fastly if...
- You're ready to invest from $50/mo
- You value powerful features over simplicity
- You need enterprise-grade capabilities
Frequently asked questions
Is Clerk or Fastly better?
Clerk scores 85/100 compared to Fastly's 76/100 on VendorVS. However, the best choice depends on your needs — Clerk excels at ease of use (10/10) while Fastly scores 6/10.
How much does Clerk cost compared to Fastly?
Clerk starts at free (free tier available). Fastly starts at $50/mo. Clerk is the more affordable option.
Does Clerk or Fastly have a free plan?
Clerk offers a free tier. Fastly does not — its cheapest plan starts at $50/mo.
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