Auth0 vs Keycloak
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Auth0 is the stronger AI pick in Identity & Access Management: it has a visibility score of 17.2 versus 5.6 for Keycloak, and ranks ahead in 80% of the answers that name both.
Choose Auth0 if…
- You want the brand AI engines rank higher (17.2 vs 5.6)
- AI answers describe it more positively (47% vs 33% positive)
- You need SOC 2 or ISO 27001 or ISO 27018 coverage
- Developer-friendly customer identity and authentication
Choose Keycloak if…
- Free and open-source software
- Strong flexibility and customization for technical teams
- Top pick as a self-hosted option
- Backed by Red Hat and community; popular open-source IAM tool
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Auth0 | Keycloak |
|---|---|---|
| Visibility score | 17.2% | 5.6% |
| Change vs last week | up+2.6% | down−0.3% |
| Rank in Identity & Access Management | #5 | #15 |
| Share of voice | 5.4% | 2.1% |
| Mentions this run | 17 | 7 |
| Positive in AI answers | 47% | 33% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Auth0 +3.3999999999999986pp · Keycloak −0.7000000000000002pp over 1 weekly runs.
Engine by engine
Auth0 leads on 3 of 3 engines
Head to head in AI answers
5 engine answers name both brands
| Prompt | Engine | Auth0 | Keycloak |
|---|---|---|---|
| What are the best Identity & Access Management tools in 2026? | Perplexity | #6 | #8 |
| Top identity and access management platform options for B2B SaaS companies | Perplexity | #2 | #7 |
| Best identity and access management platform for startups | Perplexity | #2 | #6 |
| Alternatives to the most popular identity and access management platform | Perplexity | #7 | #8 |
| Is there a free identity and access management platform for small teams? | Perplexity | #6 | #4 |
Features, pricing & fit
| Dimension | Auth0 | Keycloak |
|---|---|---|
| Pricing model | Usage-based | — |
| Entry price | Free; paid from $35 / mo | — |
| Free plan | Yes | — |
| Deployment | Cloud (multi-tenant public cloud) or private cloud | Self-hosted; ships as a single lightweight container image, with clustering for scalability and availability |
| Compliance | SOC 2, ISO 27001, ISO 27018 | — |
| Support | Community forum, Standard support, Premier support, 24/7 support | Community support via GitHub Discussions, Commercial support via Red Hat build of Keycloak |
| Founded | 2013 | 2014 |
| Headquarters | Bellevue, WA, United States | — |
| Funding | Series D · $332M raised | — |
| Best for | Development teams adding login, SSO and authorization to B2C apps, B2B SaaS and AI agents | Teams that want to self-host standards-based single sign-on and identity brokering for their applications |
Plans side by side
Auth0
Keycloak
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Auth0
- Developer-friendly customer identity and authentication
- Strong, customizable CIAM for customer-facing applications
- Default favorite for developer-centric consumer identity
- Published plan tiers and pricing with clear limits
- Free tier for getting started
Keycloak
- Free and open-source software
- Strong flexibility and customization for technical teams
- Top pick as a self-hosted option
- Backed by Red Hat and community; popular open-source IAM tool
- Supports SAML, OAuth 2.0, and OpenID Connect
- Team must handle hosting, upgrades, backups, and security
- Less operational simplicity than managed alternatives
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run
Cite as: SlateIndex, “Auth0 vs Keycloak”, https://slateindex.ai/compare/auth0-vs-keycloak, data of Nov 3, 2026. Licence: CC BY 4.0.