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APIs.guru vs languagelayer

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

APIAPIs.guruHEALTHY97languagelayerHEALTHY94
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms266456
P95 · ms1421893
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

APIs.guru vs languagelayer: common questions

Which is more reliable, APIs.guru or languagelayer?

Both are neck-and-neck — APIs.guru and languagelayer each measure 100% 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.

Which is faster, APIs.guru or languagelayer?

APIs.guru has the lower median latency in our checks — APIs.guru responds in 266 ms versus languagelayer at 456 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 languagelayer need an API key?

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

Can I call APIs.guru and languagelayer from the browser?

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

Are APIs.guru and languagelayer free for commercial use?

APIs.guru has unclear commercial terms, and languagelayer 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.