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Acoustid API vs OCR.Space

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

APIAcoustid APINEW—OCR.SpaceREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Acoustid API vs OCR.Space: common questions

Which is more reliable, Acoustid API or OCR.Space?

On our scheduled checks, OCR.Space leads on measured uptime — Acoustid API at —% versus OCR.Space at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Acoustid API and OCR.Space need an API key?

Both ask you to authenticate — Acoustid API uses an API key and OCR.Space uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Acoustid API and OCR.Space from the browser?

Yes — both Acoustid API and OCR.Space 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 Acoustid API and OCR.Space free for commercial use?

Acoustid API has unclear commercial terms, and OCR.Space 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.