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Keen IO vs TensorFeed

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

APIKeen IOHEALTHY90TensorFeedHEALTHY97
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms667306
P95 · ms1461752
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — no key (static JSON feed endpoints)
Rate limitUnpublished120 req/window · 119 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

Keen IO vs TensorFeed: common questions

Which is more reliable, Keen IO or TensorFeed?

Both are neck-and-neck — Keen IO and TensorFeed 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, Keen IO or TensorFeed?

TensorFeed has the lower median latency in our checks — Keen IO responds in 667 ms versus TensorFeed at 306 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 Keen IO and TensorFeed need an API key?

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

Can I call Keen IO and TensorFeed from the browser?

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

Are Keen IO and TensorFeed free for commercial use?

Keen IO has unclear commercial terms, and TensorFeed 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.