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serpstack vs Wahlumfragen Datenbank API

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

APIserpstackHEALTHY93Wahlumfragen Datenbank APIHEALTHY64
Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d98.3%100%
P50 · ms4921215
P95 · ms14423172
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

serpstack vs Wahlumfragen Datenbank API: common questions

Which is more reliable, serpstack or Wahlumfragen Datenbank API?

On our scheduled checks, Wahlumfragen Datenbank API leads on measured uptime — serpstack at 99.02% versus Wahlumfragen Datenbank API at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, serpstack or Wahlumfragen Datenbank API?

serpstack has the lower median latency in our checks — serpstack responds in 492 ms versus Wahlumfragen Datenbank API at 1215 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 serpstack and Wahlumfragen Datenbank API need an API key?

Wahlumfragen Datenbank API needs no key, while serpstack requires a free API key. If you want to start calling without signup, reach for Wahlumfragen Datenbank API first.

Can I call serpstack and Wahlumfragen Datenbank API from the browser?

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

Are serpstack and Wahlumfragen Datenbank API free for commercial use?

serpstack has unclear commercial terms, and Wahlumfragen Datenbank 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.