# Auth0 vs Firebase Authentication

**Leader by vioscaleAI score:** Auth0

| Attribute | Auth0 | Firebase Authentication |
|---|---|---|
| **vioscaleAI score** | 81.8 (72% (medium)) | 54.9 (33% (low)) |
| content.faq | `[{"answer":"A platform providing identity authentication, authorization, and access management services for applications, supporting passwordless login, social authentication, enterprise SSO, multi-factor authentication, and fine-grained access control for users and AI agents. It is indexed under Auth & Identity Software.","source":"https://auth0.com/pricing","question":"What is Auth0?","confidence":0.6},{"answer":"Auth0 offers a free tier, so you can start without paying. Paid plans are also available: Free, Professional, Enterprise and Startup. Pricing changes often, so verify at source before relying on it.","source":"https://auth0.com/pricing","question":"Is Auth0 free?","confidence":0.6},{"answer":"Auth0 supports the web, macOS, iOS, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://auth0.com/pricing","question":"What platforms does Auth0 support?","confidence":0.6},{"answer":"Yes. Auth0 can be deployed cloud / SaaS, hybrid and on-premise, so it does not have to run on the vendor's infrastructure.","source":"https://auth0.com/pricing","question":"Can Auth0 be self-hosted?","confidence":0.6},{"answer":"We have confirmed 20 integrations for Auth0, including Datadog, Splunk, AWS, Azure, Slack, Segment, Salesforce and Tealium, plus 12 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://auth0.com/pricing","question":"What does Auth0 integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Auth0. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Auth0 not holding them. Always confirm compliance directly before you rely on it.","source":"https://auth0.com/security","question":"What security certifications does Auth0 have?","confidence":0.7}]` | `[{"answer":"Firebase Authentication is a managed identity service supporting phone-based SMS authentication, SAML, and OpenID Connect. It offers a free tier with a 50K monthly active user limit or pay-as-you-go usage-based billing. It is indexed under Auth & Identity Software.","source":"https://firebase.google.com/pricing","question":"What is Firebase Authentication?","confidence":0.6},{"answer":"Firebase Authentication offers a free tier, so you can start without paying. Paid plans are also available: Spark and Blaze. Pricing changes often, so verify at source before relying on it.","source":"https://firebase.google.com/pricing","question":"Is Firebase Authentication free?","confidence":0.6},{"answer":"Firebase Authentication supports the web, iOS, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://firebase.google.com/pricing","question":"What platforms does Firebase Authentication support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Firebase Authentication, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://firebase.google.com/pricing","question":"Can Firebase Authentication be self-hosted?","confidence":0.6},{"answer":"We have confirmed 7 integrations for Firebase Authentication, including Google Cloud, Cloud Run, Cloud Build, Cloud Logging, Cloud Secrets Manager, BigQuery and Cloud SQL. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://firebase.google.com/pricing","question":"What does Firebase Authentication integrate with?","confidence":0.6},{"answer":"Firebase Authentication is available worldwide. Its primary market is the United States.","source":"https://firebase.google.com/pricing","question":"Where is Firebase Authentication available?","confidence":0.5}]` |
| deployment.options | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | Auth0 provides authentication, authorization, and identity management services for applications. It supports multiple authentication methods, including passwordless login, social connections, and enterprise federation, with built-in security features like fraud detection and compliance controls. | Firebase Authentication is a managed identity service supporting phone-based SMS authentication, SAML, and OpenID Connect. It offers a free tier with a 50K monthly active user limit or pay-as-you-go usage-based billing. |
| features.capabilities | `{"mfa":true,"oidc":true,"rbac":true,"hosting":"cloud","saml_sso":true,"hosted_ui":"both","open_source":false,"passwordless":true,"social_login":true,"b2b_multi_tenant":true,"passkeys_webauthn":true,"scim_provisioning":true}` | `{"oidc":true,"hosting":"cloud","saml_sso":true,"hosted_ui":"both","open_source":false,"passwordless":true,"social_login":true}` |
| integrations.count | 4 | 7 |
| integrations.list | `[{"name":"Datadog"},{"name":"Splunk"},{"name":"AWS"},{"name":"Azure"},{"name":"Slack"},{"name":"Segment"},{"name":"Salesforce"},{"name":"Tealium"},{"name":"Web3Auth"},{"name":"Spruce ID"},{"name":"Unstoppable Domains"},{"name":"Dock.io"},{"name":"Ethereum Name Service"},{"name":"NFT services"},{"name":"Okta","category":"identity"},{"name":"DataGuard","category":"privacy"},{"name":"OneTrust","category":"privacy"},{"name":"login.xyz","category":"web3"},{"name":"Ethereum Name System","category":"web3"},{"name":"MCP (Model Context Protocol)","native":true,"category":"ai","direction":"bidirectional"}]` | `[{"name":"Google Cloud","native":true},{"name":"Cloud Run","native":true},{"name":"Cloud Build","native":true},{"name":"Cloud Logging","native":true},{"name":"Cloud Secrets Manager","native":true},{"name":"BigQuery","native":true},{"name":"Cloud SQL","native":true}]` |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"ios":true,"web":true,"android":true}` |
| pricing | `{"type":"subscription","plans":[{"free":true,"name":"Free","features":["Passwordless Authentication","Unlimited Social Connections","1 Enterprise Connection","Self-Service SSO","Pro Multi-Factor Authentication","Role-based Access Control Per Organization"],"description":"Up to 25,000 monthly active users with core features","contactSales":false,"includedLimits":{"monthly_active_users":"25,000"}},{"free":false,"name":"Professional","description":"Customizable monthly active users from 1,000 to 100,000 or more","contactSales":false},{"free":false,"name":"Enterprise","features":["Enterprise Multi-Factor Authentication","Custom User & SSO Tiers","Enterprise Administration & Support","99.99% SLA","Enterprise add-ons"],"description":"Custom user and SSO tiers for enterprises requiring scale and dedicated support","contactSales":true},{"free":true,"name":"Startup","features":["Enterprise Identity Providers","Pro MFA & Password Protection","SSO for Auth0 Dashboard","$5,000 AWS credits"],"description":"Free for one year with 100,000 monthly active users and advanced features","contactSales":false,"includedLimits":{"aws_credits":"5000","monthly_active_users":"100,000"}}],"summary":"Free tier for up to 25,000 MAU; Professional plans customizable from 1,000+ MAU; Enterprise plans with 99.99% SLA; Free Startup program for one year","freeTier":true,"sourceUrl":"https://auth0.com/pricing","retrievedAt":"2026-09-07T16:08:01.808Z","freeTrialDays":22}` | `{"type":"hybrid","plans":[{"free":true,"name":"Spark","description":"Free tier with usage limits","contactSales":false,"includedLimits":{"saml_oidc_users":"50","monthly_active_users":"50K"}},{"free":false,"name":"Blaze","description":"Pay-as-you-go with Spark free tier limits included, then usage-based billing","contactSales":false,"includedLimits":{"saml_oidc_users":"50","monthly_active_users":"50K"}}],"summary":"Free Spark plan with 50K monthly active users. Blaze plan uses pay-as-you-go pricing.","currency":"USD","freeTier":true,"sourceUrl":"https://firebase.google.com/pricing","retrievedAt":"2026-08-14T15:28:10.980Z","billingPeriods":["month"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | low | low |
| pricing.transparent | no | yes |
| reliability.sla_pct | 99.99 | - |
| reliability.status_page | yes | yes |
| security.certifications | `[{"name":"HIPAA BAA","status":"active"},{"name":"PCI Compliance","status":"active"}]` | - |
| security.disclosure_policy | yes | - |
| security.fedramp | yes | - |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.iso27001 | yes | - |
| security.pci | yes | - |
| security.soc2 | yes | - |
| security.trust_center | https://auth0.com/security | - |

## Capabilities (Auth & Identity Software)

| Capability | Auth0 | Firebase Authentication |
|---|:--:|:--:|
| **Deployment** |  |  |
| Hosting | Cloud only | Cloud only |
| **Methods** |  |  |
| Social login | ✓ | ✓ |
| Passwordless | ✓ | ✓ |
| Passkeys / WebAuthn | ✓ | - |
| Multi-factor auth | ✓ | - |
| **Enterprise** |  |  |
| SAML SSO | ✓ | ✓ |
| SCIM provisioning | ✓ | - |
| B2B / multi-tenancy | ✓ | - |
| **Standards** |  |  |
| OpenID Connect provider | ✓ | ✓ |
| **Delivery** |  |  |
| Hosted UI | Both | Both |
| **Access** |  |  |
| RBAC | ✓ | - |
| **Licensing** |  |  |
| Self-hostable OSS core | ✗ | ✗ |

*Source: vioscaleAI. Generated 2026-10-16T19:15:08.800Z. "-" = undocumented, not absent.*