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Raider vs TETR.IO

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

APIRaiderNEW—TETR.IONEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (Blizzard game data)Unverified
Free tierFree, no API key for public dataFree, no API key
Rate limitUnpublishedHonor server-provided cache expiry (~60s); docs require caching
In directory since2026-07-052026-07-05
operationalpartialdownno data

Raider vs TETR.IO: common questions

Which is more reliable, Raider or TETR.IO?

On our scheduled checks, TETR.IO leads on measured uptime — Raider at —% versus TETR.IO 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 Raider and TETR.IO need an API key?

Neither needs a paid key — Raider 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 Raider and TETR.IO from the browser?

Yes — both Raider 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 Raider and TETR.IO free for commercial use?

Raider 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.