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Gladia vs Photon API

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

APIGladiaHEALTHY76Photon APIHEALTHY91
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms1203710
P95 · ms41211598
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Gladia vs Photon API: common questions

Which is more reliable, Gladia or Photon API?

On our scheduled checks, Gladia leads on measured uptime — Gladia at 100% versus Photon API at 99.02% 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, Gladia or Photon API?

Photon API has the lower median latency in our checks — Gladia responds in 1203 ms versus Photon API at 710 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 Gladia and Photon API need an API key?

Photon API needs no key, while Gladia requires a free API key. If you want to start calling without signup, reach for Photon API first.

Can I call Gladia and Photon API from the browser?

Yes — both Gladia and Photon API 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 Gladia and Photon API free for commercial use?

Gladia has unclear commercial terms, and Photon API 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.