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APIs.guru vs Genderize.io

Same instrument, two spec sheets — measured, not claimed.

APIAPIs.guruHEALTHY97Genderize.ioHEALTHY62
Uptime · 30d
Uptime · 90d100%41.2%
Uptime · 30d100%36.7%
P50 · ms266632
P95 · ms14211060
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free key
Rate limitUnpublishedKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headers
In directory since2026-07-052026-07-05
operationalpartialdownno data

APIs.guru vs Genderize.io: common questions

Which is more reliable, APIs.guru or Genderize.io?

On our scheduled checks, APIs.guru leads on measured uptime — APIs.guru at 100% versus Genderize.io at 41.2% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, APIs.guru or Genderize.io?

APIs.guru has the lower median latency in our checks — APIs.guru responds in 266 ms versus Genderize.io at 632 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do APIs.guru and Genderize.io need an API key?

Neither needs a paid key — APIs.guru is callable with no signup, and Genderize.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call APIs.guru and Genderize.io from the browser?

Yes — both APIs.guru and Genderize.io send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are APIs.guru and Genderize.io free for commercial use?

APIs.guru has unclear commercial terms, and Genderize.io has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.