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Technology · head to head

Auth0 vs Vonage

Auth0 logo

Auth0

Technology

Secure access for everyone

From
Free
Rated
-
Full reviewWebsite
Vonage logo

Vonage

Telecommunications

Communications API platform for messaging and voice

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Auth0 has a free tier, so it costs nothing to try first.
  • Each has a real cost: Auth0 free tier limited to 25,000 monthly active users, requiring upgrade for growth beyond that; Vonage mMS pricing not published publicly, requires sales team quote
  • They diverge on capability: Auth0 covers Universal login, Vonage covers SMS messaging.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Auth0 and Vonage actually diverge.

Attributes where Auth0 and Vonage differ
AttributeAuth0Vonage
Starting priceFreeOn request
Pricing modelUnknownusage-based
Free tierYesNo
PlatformsWeb, iOS, AndroidAPI
CategoryTechnologyTelecommunications
Founded20132002

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Auth0

  • Universal login
  • Social login
  • Multi-factor authentication
  • Passwordless
  • User management
  • Anomaly detection
  • Extensibility
  • Machine to machine

Only in Vonage

  • SMS messaging
  • Voice API
  • Video API
  • Number management
  • Salesforce
  • Web support
  • Mobile support
  • API support

Both cover

  • Slack
  • AWS
  • Azure

What people use each for

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

Auth0

  • B2C authenticationnot Vonage
  • B2B authenticationnot Vonage
  • B2E authenticationnot Vonage
  • API securitynot Vonage
  • Mobile app securitynot Vonage

Vonage

  • Customer engagementnot Auth0
  • Lead generationnot Auth0
  • Customer supportnot Auth0
  • Sales automationnot Auth0

Where each one falls short

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

Auth0

  • Free tier limited to 25,000 monthly active users, requiring upgrade for growth beyond that
  • Advanced features like MFA and RBAC only available on paid Essentials tier and above
  • Ownership by Okta introduces risk that independent product roadmap may change

Vonage

  • MMS pricing not published publicly, requires sales team quote
  • International SMS rates can exceed $1.00 per message in some markets
  • Smaller developer ecosystem compared to Twilio

Pricing, plan by plan

Auth0

Free
  • FreeFree
    • Up to 25,000 monthly active users
    • Basic authentication
    • Email/password login
  • Essentials (B2C)$35/month
    • Unlimited MAUs beyond free tier
    • Multi-Factor Authentication
    • Role-Based Access Control
  • Professional (B2C)$240/month
    • All Essentials features
    • Advanced security
    • Custom branding

Vonage

On request
  • Pay-as-you-go$0.05/month
    • SMS and voice
    • No monthly commitment
  • Starter$100/month
    • Volume discounts
    • Premium support
  • Enterprise$undefined/month
    • Custom pricing
    • Dedicated team

Which should you pick?

Choose Auth0 if

  • You need universal login.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want social login.
Auth0 review

Choose Vonage if

  • You need sms messaging.
  • You work on API.
  • You also want voice api.
Vonage review

Questions people ask

Is Auth0 or Vonage better?
Neither clearly leads. Auth0 starts at Free and Vonage at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Auth0 or Vonage?
Auth0 has a free tier; the other does not. Paid plans start at Free for Auth0 and On request for Vonage.
Does Auth0 or Vonage run on more platforms?
Auth0 runs on Web, iOS, Android. Vonage runs on API.
Can I use Auth0 for free?
Yes. Auth0 has a free tier, so you can try it without paying. Vonage starts at On request.
What is Auth0 best used for?
Auth0 is most often used for b2c authentication, b2b authentication, b2e authentication, api security. Of those, b2c authentication and b2b authentication are not what Vonage is typically brought in for.
What can Auth0 do that Vonage cannot?
Auth0 covers Universal login, Social login, Multi-factor authentication, Passwordless. Vonage covers SMS messaging, Voice API, Video API, Number management. Both handle Slack, AWS, Azure.

Answered from the vendors’ own pages

Auth0: How much does Auth0 cost?

Auth0 has a Free tier for up to 25,000 monthly active users (MAUs). Paid plans start at $35/month (Essentials B2C) and scale to $240/month (Professional B2C) and higher for Enterprise. Pricing scales with MAU usage.

Source
Vonage: How much does Vonage SMS cost?

Vonage SMS API costs $0.00809 per outbound message and $0.00649 per inbound message in the US. There is no monthly minimum. Virtual phone numbers cost around $4.18 per month.

Source
Auth0: Does Auth0 include Multi-Factor Authentication?

No. MFA, RBAC (Role-Based Access Control), and premium support are not included in the free tier and require upgrading to paid Essentials plans or higher.

Source
Vonage: What is Vonage Voice API pricing?

Voice API charges $0.00798/minute for US domestic calls. You pay per minute for calls made and received via the API.

Source
Auth0: Is Auth0 independent or part of a larger company?

Auth0 was acquired by Okta in May 2021 for $6.5 billion. It now operates as a subsidiary business unit within Okta, but maintains its own brand and operations.

Source
Vonage: How does Vonage compare to Twilio for SMS?

Vonage charges $0.00809 per SMS versus Twilio at $0.0083. Vonage is marginally cheaper for SMS-heavy workloads, while Twilio offers better developer experience and broader channel support.

Source
Auth0: Who should use Auth0 vs Okta?

Auth0 is developer-focused and serves customer identity use cases (B2C). Okta serves workforce identity (B2B) and has broader enterprise features. Auth0 now serves both markets post-acquisition but maintains its developer-friendly positioning.

Source
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