Fastly

Real-time CDN and edge computing for high-performance apps

Firebase Authentication

Google-backed auth with generous free tier for mobile and web

Fastly vs Firebase Authentication: Full Comparison (2026)

Pricing, features, scores, and a clear verdict on which one is right for you.

The bottom line

Fastly positions itself as "real-time cdn and edge computing for high-performance apps" while Firebase Authentication goes after "google-backed auth with generous free tier for mobile and web" — so the right pick depends on which problem you're actually solving. They take different commercial approaches — Fastly uses a usage-based-based model and Firebase Authentication a freemium approach, which affects how costs scale as your team grows. Firebase Authentication 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.

At a glance

	Fastly	Firebase Authentication
Our score	76/100	76/100
Starting price	$50/mo	Free
Free tier	No	Yes
Best for	Real-time CDN and edge computing for high-performance apps	Google-backed auth with generous free tier for mobile and web

Pricing comparison

Fastly

No free tier

Pay-as-you-go$50/mo

Enterprise$null/mo

Pricing verified 2026-04-16

Firebase Authentication

Free tier available

Spark (Free)Free

Blaze (Pay-as-you-go)$null/mo

Pricing verified 2026-04-16

Calculate your cost

How many developers?10

1500

FastlyUnknown

Contact sales

Firebase AuthenticationUnknown

Contact sales

Visit Fastly →Try Firebase Authentication free →

Feature comparison

core

Feature	Fastly	Firebase Authentication
CDN	Yes	No
DDoS protection	Yes	No
Instant cache purge	Yes	No
WAF	Yes	No
Real-time analytics	Yes	No
Email/password	No	Yes
Google OAuth	No	Yes
Apple OAuth	No	Yes
Phone SMS	No	Yes
Anonymous auth	No	Yes

advanced

Feature	Fastly	Firebase Authentication
Compute@Edge (Wasm)	Yes	No
Image optimization	Yes	No
Origin shielding	Yes	No
Custom VCL	Yes	No
Bot management	Yes	No
Multi-tenancy	No	Blaze
SAML SSO	No	Blaze ($0.015/MAU)
Custom claims	No	Yes
App Check	No	Yes
Blocking functions	No	Yes

integrations

Feature	Fastly	Firebase Authentication
AWS	Yes	No
GCP	Yes	No
Terraform	Yes	No
Fastly CLI	Yes	No
GitHub Actions	Yes	No
Firebase (all products)	No	Yes
Google Cloud	No	Yes
Flutter	No	Yes
Android/iOS SDKs	No	Yes
Web SDK	No	Yes

Ratings breakdown

Fastly

Ease of use

6/10

Value for money

5/10

Features

9/10

Support

8/10

Firebase Authentication

Ease of use

8/10

Value for money

9/10

Features

7/10

Support

6/10

What the data tells us

Key capabilities you'd miss

Choosing Fastly means going without Email/password, Google OAuth, Apple OAuth (which Firebase Authentication offers). Choosing Firebase Authentication means losing CDN, DDoS protection, Instant cache purge. 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

Fastly (501-1,000 employees) has the engineering bench to ship features across many fronts but may iterate slower on individual requests. Firebase Authentication (100,000+ employees) typically ships faster on its core product but may lag on peripheral features. Consider which matters more for your roadmap.

Choose Fastly if...

You're ready to invest from $50/mo
You value powerful features over simplicity
You need enterprise-grade capabilities

Visit Fastly →

Choose Firebase Authentication 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

Try Firebase Authentication free →

Frequently asked questions

Is Fastly or Firebase Authentication better?

Fastly scores 76/100 compared to Firebase Authentication's 76/100 on VendorVS. However, the best choice depends on your needs — Fastly excels at ease of use (6/10) while Firebase Authentication scores 8/10.

How much does Fastly cost compared to Firebase Authentication?

Fastly starts at $50/mo. Firebase Authentication starts at free (free tier available). Firebase Authentication is the more affordable option.

Does Fastly or Firebase Authentication have a free plan?

Firebase Authentication offers a free tier. Fastly does not — its cheapest plan starts at $50/mo.

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