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Bible-api vs Gutendex

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

APIBible-apiHEALTHY92GutendexDYING25
Uptime · 30d
Uptime · 90d100%8.8%
Uptime · 30d100%8.3%
P50 · ms6043229
P95 · ms27964690
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licensePublic Domain (WEB translation; per translation_note in response)Public domain (Project Gutenberg data)
Free tierFree — limits not publishedFree, no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Bible-api vs Gutendex: common questions

Which is more reliable, Bible-api or Gutendex?

On our scheduled checks, Bible-api leads on measured uptime — Bible-api at 100% versus Gutendex at 8.8% 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, Bible-api or Gutendex?

Bible-api has the lower median latency in our checks — Bible-api responds in 604 ms versus Gutendex at 3229 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 Bible-api and Gutendex need an API key?

Neither needs a paid key — Bible-api is callable with no signup, and Gutendex is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Bible-api and Gutendex from the browser?

Yes — both Bible-api and Gutendex 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 Bible-api and Gutendex free for commercial use?

Bible-api has unclear commercial terms, and Gutendex 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.