Elden Ring API vs TETR.IO

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms312357
P95 · ms1111906
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree, no API key
Rate limitUnpublishedHonor server-provided cache expiry (~60s); docs require caching
In directory since2026-07-052026-07-05
operationalpartialdownno data

Elden Ring API vs TETR.IO: common questions

Which is more reliable, Elden Ring API or TETR.IO?

Both are neck-and-neck — Elden Ring API and TETR.IO 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, Elden Ring API or TETR.IO?

Elden Ring API has the lower median latency in our checks — Elden Ring API responds in 312 ms versus TETR.IO at 357 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 Elden Ring API and TETR.IO need an API key?

Neither needs a paid key — Elden Ring API is callable with no signup, and TETR.IO is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Elden Ring API and TETR.IO from the browser?

Yes — both Elden Ring API and TETR.IO 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 Elden Ring API and TETR.IO free for commercial use?

Elden Ring API has unclear commercial terms, and TETR.IO 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.