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QuickChart vs Wahlumfragen Datenbank API

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

APIQuickChartHEALTHY96Wahlumfragen Datenbank APIHEALTHY64
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms3181215
P95 · ms35983172
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

QuickChart vs Wahlumfragen Datenbank API: common questions

Which is more reliable, QuickChart or Wahlumfragen Datenbank API?

Both are neck-and-neck — QuickChart 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, QuickChart or Wahlumfragen Datenbank API?

QuickChart has the lower median latency in our checks — QuickChart responds in 318 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 QuickChart and Wahlumfragen Datenbank API need an API key?

Neither needs a paid key — QuickChart 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 QuickChart and Wahlumfragen Datenbank API from the browser?

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

Are QuickChart and Wahlumfragen Datenbank API free for commercial use?

QuickChart 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.