shipapis
StarSubmit an APISubmit API

Cisco Spark vs Vonage (Nexmo) API

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

APICisco SparkHEALTHY80Vonage (Nexmo) APIHEALTHY94
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1608507
P95 · ms29361019
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublished10, 120;w=60;name="crd|generic_key^nexmo-gloo.sanity-service-remote-address-120-rpm|remote_address", 10;w=1;name="crd|generic_key^nexmo-gloo.sanity-service-remote-address-10-rps|remote_address" req/window · 9 remaining · resets 1
In directory since2026-07-052026-07-05
operationalpartialdownno data

Cisco Spark vs Vonage (Nexmo) API: common questions

Which is more reliable, Cisco Spark or Vonage (Nexmo) API?

Both are neck-and-neck — Cisco Spark and Vonage (Nexmo) API 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, Cisco Spark or Vonage (Nexmo) API?

Vonage (Nexmo) API has the lower median latency in our checks — Cisco Spark responds in 1608 ms versus Vonage (Nexmo) API at 507 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 Cisco Spark and Vonage (Nexmo) API need an API key?

Both ask you to authenticate — Cisco Spark uses an API key and Vonage (Nexmo) API uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Cisco Spark and Vonage (Nexmo) API from the browser?

Only Cisco Spark is browser-friendly — it returns CORS headers over HTTPS. Vonage (Nexmo) API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Cisco Spark and Vonage (Nexmo) API free for commercial use?

Cisco Spark has unclear commercial terms, and Vonage (Nexmo) API 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.