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Security & Cybersecurity · head to head

Keygen vs Stytch

K

Keygen

Security & Cybersecurity

Open, source-available software licensing API

From
On request
Rated
-
Full reviewWebsite
Stytch logo

Stytch

Security & Cybersecurity

Identity platform with passwordless auth, passkeys and bot detection.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Stytch has a free tier, so it costs nothing to try first.
  • Each has a real cost: Keygen cloud hosted plans start at $995 per month billed per domain, a floor aimed at established software vendors rather than solo developers; Stytch free tier limited to 10,000 monthly active users; scaling beyond this requires custom pricing negotiation

Where they differ

Only the attributes on which Keygen and Stytch actually diverge.

Attributes where Keygen and Stytch differ
AttributeKeygenStytch
Starting priceOn requestFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsWebWeb, API

Identical on both: user rating (Not yet rated), category (Security & Cybersecurity).

What people use each for

The jobs each tool is most often brought in to do.

Keygen

No use cases recorded yet. See the Keygen review.

Stytch

  • Applications prioritising passwordless and passkey authenticationnot Keygen
  • SaaS platforms requiring AI agent authentication and machine-to-machine flowsnot Keygen
  • Companies with emerging identity needs such as bot detection and device intelligencenot Keygen
  • Organisations building with Next.js and React requiring modern auth patternsnot Keygen
  • Applications needing transparent pricing without surprise tiers or feature gatingnot Keygen

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Keygen

  • Cloud hosted plans start at $995 per month billed per domain, a floor aimed at established software vendors rather than solo developers

Stytch

  • Free tier limited to 10,000 monthly active users; scaling beyond this requires custom pricing negotiation
  • Fraud prevention capabilities billed at $0.005 per fingerprint for usage exceeding 10,000 free checks
  • Additional SSO or SCIM connections beyond the 5 included in free tier cost $125 each
  • Brand customisation and email removal require one-time payment of $99
  • HIPAA and advanced fraud protection only available in Enterprise tier
  • No native UI builder; requires custom frontend development for fully-branded auth flows

Pricing, plan by plan

Keygen

On request

No published plan breakdown. See the Keygen review.

Stytch

Free
  • FreeFree
    • 10,000 monthly active users and AI agents
    • Unlimited organisations
    • 5 SSO or SCIM connections
  • Scaled$null/variable
    • Usage-based pricing for users exceeding 10,000
    • All free tier features
    • Volume discounts available
  • Enterprise$null/variable
    • Custom pricing
    • Discounted volume rates
    • Enterprise support SLA

Which should you pick?

Choose Keygen if

Nothing in the data separates Keygen from Stytch on the points above - pick on price and on how each one feels to use.

Keygen review

Choose Stytch if

  • You want to start without paying.
  • You work on Web, API.
Stytch review

Questions people ask

Is Keygen or Stytch better?
Neither clearly leads. Keygen starts at On request and Stytch at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keygen or Stytch?
Stytch has a free tier; the other does not. Paid plans start at On request for Keygen and Free for Stytch.
Does Keygen or Stytch run on more platforms?
Keygen runs on Web. Stytch runs on Web, API.
Can I use Stytch for free?
Yes. Stytch has a free tier, so you can try it without paying. Keygen starts at On request.

Answered from the vendors’ own pages

Stytch: What is included in Stytch's free tier?

The free tier includes 10,000 monthly active users (human and AI agents), unlimited organisations, 5 SSO or SCIM connections, and 1,000 machine-to-machine tokens with full authentication features.

Source
Stytch: Does Stytch support AI agent authentication?

Yes. Stytch provides native AI agent authentication and authorisation, with support for the Model Context Protocol (MCP) for authenticating AI agents accessing external systems.

Source
Stytch: What fraud prevention features does Stytch offer?

Stytch includes bot detection with 99.99% accuracy, device fingerprinting, invisible CAPTCHA, and zero-day device intelligence built into all tiers.

Source
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