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Vector Express v2.0 vs Wahlumfragen Datenbank API

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

APIVector Express v2.0HEALTHY91Wahlumfragen Datenbank APIHEALTHY64
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms6131215
P95 · ms16623172
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFreeFree — limits not published
Rate limit5 req/window · 4 remaining · resets 1783513379Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Vector Express v2.0 vs Wahlumfragen Datenbank API: common questions

Which is more reliable, Vector Express v2.0 or Wahlumfragen Datenbank API?

Both are neck-and-neck — Vector Express v2.0 and Wahlumfragen Datenbank 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, Vector Express v2.0 or Wahlumfragen Datenbank API?

Vector Express v2.0 has the lower median latency in our checks — Vector Express v2.0 responds in 613 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 Vector Express v2.0 and Wahlumfragen Datenbank API need an API key?

Neither needs a paid key — Vector Express v2.0 is callable with no signup, and Wahlumfragen Datenbank API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Vector Express v2.0 and Wahlumfragen Datenbank API from the browser?

Only Wahlumfragen Datenbank API is browser-friendly — it returns CORS headers over HTTPS. Vector Express v2.0 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Vector Express v2.0 and Wahlumfragen Datenbank API free for commercial use?

Vector Express v2.0 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.