ClinicalTrials.gov vs Covid-19 Datenhub
Same instrument, two spec sheets — measured, not claimed.
ClinicalTrials.gov vs Covid-19 Datenhub: common questions
Which is more reliable, ClinicalTrials.gov or Covid-19 Datenhub?
On our scheduled checks, Covid-19 Datenhub leads on measured uptime — ClinicalTrials.gov at 99.02% versus Covid-19 Datenhub 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, ClinicalTrials.gov or Covid-19 Datenhub?
ClinicalTrials.gov has the lower median latency in our checks — ClinicalTrials.gov responds in 243 ms versus Covid-19 Datenhub at 789 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 ClinicalTrials.gov and Covid-19 Datenhub need an API key?
Neither needs a paid key — ClinicalTrials.gov is callable with no signup, and Covid-19 Datenhub is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call ClinicalTrials.gov and Covid-19 Datenhub from the browser?
Yes — both ClinicalTrials.gov and Covid-19 Datenhub send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are ClinicalTrials.gov and Covid-19 Datenhub free for commercial use?
ClinicalTrials.gov has unclear commercial terms, and Covid-19 Datenhub 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.