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Cybersecurity · head to head

Logto vs Terragrunt

Logto logo

Logto

Cybersecurity

Open-source identity and authentication infrastructure for apps and APIs

From
Free
Rated
-
Full reviewWebsite
Terragrunt logo

Terragrunt

Cloud

The Open Source IaC Orchestrator Platform Teams Trust

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Logto advanced features like RBAC, organizations, MFA, and enterprise SSO are billed as separate paid add-ons rather than included in Pro.; Terragrunt additional complexity layer on top of Terraform
  • They diverge on capability: Logto covers Prebuilt sign-in UI, Terragrunt covers Infrastructure orchestration.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Logto and Terragrunt actually diverge.

Attributes where Logto and Terragrunt differ
AttributeLogtoTerragrunt
Pricing modelfreemiumUnknown
Platformsweb, apiAWS, Azure, GCP
CategoryCybersecurityCloud

Identical on both: starting price (Free), free tier (Yes), 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 Logto

  • Prebuilt sign-in UI
  • Social connectors
  • Role-based access control
  • Multi-factor authentication
  • Machine-to-machine apps
  • Audit logs

Only in Terragrunt

  • Infrastructure orchestration
  • Run Queue
  • DRY configuration
  • Automated hooks
  • Infrastructure catalog
  • Least-privilege access

What people use each for

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

Logto

  • Adding sign-in to a new SaaS productnot Terragrunt
  • Implementing SSO for B2B customersnot Terragrunt
  • Securing internal APIs with M2M tokensnot Terragrunt
  • Adding RBAC and organizations to a multi-tenant appnot Terragrunt

Terragrunt

  • Organizing Terraform code across multiple environmentsnot Logto
  • Automating infrastructure deployment workflowsnot Logto
  • Implementing infrastructure as code templates for developer self-servicenot Logto

Where each one falls short

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

Logto

  • Advanced features like RBAC, organizations, MFA, and enterprise SSO are billed as separate paid add-ons rather than included in Pro.
  • Enterprise pricing is not published and requires contacting sales.
  • Token-based billing can make cost forecasting harder than flat per-MAU pricing for high-traffic apps.

Terragrunt

  • Additional complexity layer on top of Terraform
  • Requires understanding of Terraform concepts
  • Paid tier pricing not clearly published

Pricing, plan by plan

Logto

Free
  • FreeFree
    • Up to 50,000 MAU
    • 50K tokens included
    • 3 applications
  • Pro$24/month
    • Unlimited MAU and applications
    • 3 included API resources
    • Passkey sign-in

Terragrunt

Free
  • Open SourceFree
    • Terragrunt CLI - completely free
    • Community support
  • Terragrunt Scale FreeFree
    • Free CI/CD pipeline
    • Unlimited runs and resources
    • For up to 25 infrastructure units
  • Terragrunt Scale Paid$undefined/custom
    • Volume pricing for more than 25 infrastructure units
    • Enterprise support

Which should you pick?

Choose Logto if

  • You need prebuilt sign-in ui.
  • You want to start without paying.
  • You work on web, api.
  • You also want social connectors.
Logto review

Choose Terragrunt if

  • You need infrastructure orchestration.
  • You want to start without paying.
  • You work on AWS, Azure, GCP.
  • You also want run queue.
Terragrunt review

Questions people ask

Is Logto or Terragrunt better?
Neither clearly leads. Logto starts at Free and Terragrunt at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Logto or Terragrunt?
Logto starts at Free and Terragrunt at Free.
Does Logto or Terragrunt run on more platforms?
Logto runs on web, api. Terragrunt runs on AWS, Azure, GCP.
Can I use Logto for free?
Both have a free tier, so you can try either at no cost before committing.
What is Logto best used for?
Logto is most often used for adding sign-in to a new saas product, implementing sso for b2b customers, securing internal apis with m2m tokens, adding rbac and organizations to a multi-tenant app. Of those, adding sign-in to a new saas product and implementing sso for b2b customers are not what Terragrunt is typically brought in for.
What can Logto do that Terragrunt cannot?
Logto covers Prebuilt sign-in UI, Social connectors, Role-based access control, Multi-factor authentication. Terragrunt covers Infrastructure orchestration, Run Queue, DRY configuration, Automated hooks.

Answered from the vendors’ own pages

Logto: What does Logto cost?

Logto offers a Free plan at $0/month, a Pro plan starting at $24/month with 50K free tokens included, and a custom-priced Enterprise plan. Extra add-ons like RBAC or MFA are billed separately on Pro.

Source
Terragrunt: Is Terragrunt free?

Yes, the Terragrunt CLI is completely free and open source. Terragrunt Scale offers a free tier for up to 25 infrastructure units.

Source
Logto: Is there a free plan, and what are its limits?

Yes. The Free plan supports up to 50,000 monthly active users, 3 total applications, 1 machine-to-machine app, 3 social connectors, 1 webhook, and 3-day audit log retention.

Source
Terragrunt: What is the difference between Terragrunt and Terraform?

Terragrunt is an orchestration layer on top of Terraform that handles state management, DRY principles, and deployment automation without replacing Terraform itself.

Source
Logto: How is usage metered?

Logto uses token-based billing: only access tokens issued for authentication and authorization activity are counted, rather than charging purely per MAU.

Source
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