Development — entry 026 of 100
Genderize.io
Genderize.io, from the same Demografix ApS team behind Agify and Nationalize, predicts the likely gender for a first name from a worldwide dataset and returns a probability score plus the sample count behind it, with support for `country_id` filtering and batching up to 10 names per request. No key is needed for the free tier's 2,500 names a month; paid plans scale to 25 million requests a month.
AuthenticationNone requiredCall it straight away — no key, no signup.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score85
Authentication25/25No authentication required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/genderize-io/"><img src="https://greatapis.com/badge/genderize-io.svg" alt="Scored 85 on greatapis.com"></a>Auth quickstart
- No key needed — call it now.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.