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Last.fm vs Simkl

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

APILast.fmDEAD0SimklDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseLast.fm terms — attribution requiredSimkl terms — user-contributed data
Free tierFree personal API keyFree read routes; client_id for search
Rate limitUnpublished1 req/s documented
In directory since2026-07-052026-07-05
operationalpartialdownno data

Last.fm vs Simkl: common questions

Which is more reliable, Last.fm or Simkl?

Both are neck-and-neck — Last.fm and Simkl each measure 0.0% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Do Last.fm and Simkl need an API key?

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

Can I call Last.fm and Simkl from the browser?

Yes — both Last.fm and Simkl 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 Last.fm and Simkl free for commercial use?

Last.fm has unclear commercial terms, and Simkl 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.