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Comic Vine vs TETR.IO

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

APIComic VineNEW—TETR.IONEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree, no API key
Rate limitUnpublishedHonor server-provided cache expiry (~60s); docs require caching
In directory since2026-07-052026-07-05
operationalpartialdownno data

Comic Vine vs TETR.IO: common questions

Which is more reliable, Comic Vine or TETR.IO?

On our scheduled checks, TETR.IO leads on measured uptime — Comic Vine 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 Comic Vine and TETR.IO need an API key?

TETR.IO needs no key, while Comic Vine requires a free API key. If you want to start calling without signup, reach for TETR.IO first.

Can I call Comic Vine and TETR.IO from the browser?

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

Are Comic Vine and TETR.IO free for commercial use?

Comic Vine 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.