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PubMed E-utilities vs Sodeom Search API

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

APIPubMed E-utilitiesHEALTHY68Sodeom Search APIHEALTHY34
Uptime · 30d
Uptime · 90d75.5%56.9%
Uptime · 30d66.7%63.3%
P50 · ms12594551
P95 · ms49034959
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit3 req/window · 1 remainingRetry-After: 60s
In directory since2026-07-052026-07-05
operationalpartialdownno data

PubMed E-utilities vs Sodeom Search API: common questions

Which is more reliable, PubMed E-utilities or Sodeom Search API?

On our scheduled checks, PubMed E-utilities leads on measured uptime — PubMed E-utilities at 75.5% versus Sodeom Search API at 56.9% 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, PubMed E-utilities or Sodeom Search API?

PubMed E-utilities has the lower median latency in our checks — PubMed E-utilities responds in 1259 ms versus Sodeom Search API at 4551 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 PubMed E-utilities and Sodeom Search API need an API key?

Neither needs a paid key — PubMed E-utilities is callable with no signup, and Sodeom Search API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call PubMed E-utilities and Sodeom Search API from the browser?

Yes — both PubMed E-utilities and Sodeom Search API 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 PubMed E-utilities and Sodeom Search API free for commercial use?

PubMed E-utilities has unclear commercial terms, and Sodeom Search 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.