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NASA APOD vs OpenAI API

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

APINASA APODHEALTHY—OpenAI APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain (US Gov)Unverified
Free tier1,000 req/hour with free keyFree tier — API key required
Rate limitDEMO_KEY: 30/hour, 50/dayUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

NASA APOD vs OpenAI API: common questions

Which is more reliable, NASA APOD or OpenAI API?

On our scheduled checks, OpenAI API leads on measured uptime — NASA APOD at —% versus OpenAI API at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do NASA APOD and OpenAI API need an API key?

Both ask you to authenticate — NASA APOD uses an API key and OpenAI API uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call NASA APOD and OpenAI API from the browser?

Yes — both NASA APOD and OpenAI 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 NASA APOD and OpenAI API free for commercial use?

NASA APOD allows commercial use on its free tier, and OpenAI 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.