The verdict
Hanko appears in 1 AI-ranked category — best position #4 for passkey authentication api for consumer apps.
Focused, FIDO2-certified passkey infrastructure with clean HTTP and JavaScript interfaces, cloud or self-hosted deployment, open-source code, multitenancy, and minimal identity-platform lock-in.
Claude The strongest open-source option — a passkey-first auth backend (MIT-licensed, Go) with web components for enrollment/login, self-hostable for data-residency or cost control, plus a hosted cloud tier; genuinely competitive with commercial APIs rather than a hobby project.
Gemini Combines customizable web components with an open-source, self-hostable backend, providing a developer-friendly middle ground between raw WebAuthn libraries and proprietary SaaS.
Where Hanko falls short, per the models
- GPT Teams must assemble more of the surrounding consumer-auth experience—recovery, fraud controls, sessions, and polished native flows—than with full CIAM products.
- Claude Self-hosting means you own uptime, upgrades, and scaling, and its ecosystem/integrations are thinner than the venture-backed vendors — expect more glue code for edge cases.
- Gemini Community ecosystem and direct integrations are smaller than major IAM providers, and self-hosting shifts infrastructure maintenance onto the developer.
Top alternatives per the models: Stytch · Clerk · Corbado · SimpleWebAuthn
Watch Hanko
Boards re-poll weekly and the models change their minds. One short email only when Hanko's standing moves — a rank change, a rival overtaking, or new reasoning from the models. Nothing otherwise.
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Hanko ranks #4 for best passkey authentication api for consumer apps by AI-model consensus. Put the badge in your README, docs or site — it updates automatically as the models re-rank.
[](https://modelsagree.com/best/best-passkey-authentication-api-for-consumer-apps?utm_source=badge&utm_medium=embed&utm_campaign=badge-hanko)<a href="https://modelsagree.com/best/best-passkey-authentication-api-for-consumer-apps?utm_source=badge&utm_medium=embed&utm_campaign=badge-hanko"><img src="https://modelsagree.com/badge/hanko.svg" alt="Hanko — ranked #4 for Best passkey authentication API for consumer apps by AI models on ModelsAgree" height="28"></a>Rankings are computed from what the models answer, re-polled weekly · raw reasoning shown verbatim · methodology