FIRST News API vs Open Library
Same instrument, two spec sheets — measured, not claimed.
FIRST News API vs Open Library: common questions
Which is more reliable, FIRST News API or Open Library?
On our scheduled checks, FIRST News API leads on measured uptime — FIRST News API at 100% versus Open Library at 88.2% 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, FIRST News API or Open Library?
FIRST News API has the lower median latency in our checks — FIRST News API responds in 780 ms versus Open Library at 1629 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 FIRST News API and Open Library need an API key?
Neither needs a paid key — FIRST News API is callable with no signup, and Open Library is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call FIRST News API and Open Library from the browser?
Yes — both FIRST News API and Open Library 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 FIRST News API and Open Library free for commercial use?
FIRST News API has unclear commercial terms, and Open Library 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.