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MusicBrainz vs Sunor

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

APIMusicBrainzNEW—SunorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseCore data CC0; some supplementary data CC BY-NC-SA 3.0Unverified
Free tierFree — no key requiredFree tier — API key required
Rate limit~1 request/second per IP; descriptive User-Agent requiredUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MusicBrainz vs Sunor: common questions

Which is more reliable, MusicBrainz or Sunor?

On our scheduled checks, Sunor leads on measured uptime — MusicBrainz at —% versus Sunor 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 MusicBrainz and Sunor need an API key?

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

Can I call MusicBrainz and Sunor from the browser?

Only MusicBrainz is browser-friendly — it returns CORS headers over HTTPS. Sunor needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are MusicBrainz and Sunor free for commercial use?

MusicBrainz allows commercial use on its free tier, and Sunor 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.