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OpenAI API vs Unusual Units Converter

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

APIOpenAI APIDEAD0Unusual Units ConverterHEALTHY100
Uptime · 30d
Uptime · 90d0.0%100%
Uptime · 30d0.0%100%
P50 · ms—137
P95 · ms—252
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitRetry-After: 109sUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenAI API vs Unusual Units Converter: common questions

Which is more reliable, OpenAI API or Unusual Units Converter?

On our scheduled checks, Unusual Units Converter leads on measured uptime — OpenAI API at 0.0% versus Unusual Units Converter 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.

Do OpenAI API and Unusual Units Converter need an API key?

Unusual Units Converter needs no key, while OpenAI API requires a free API key. If you want to start calling without signup, reach for Unusual Units Converter first.

Can I call OpenAI API and Unusual Units Converter from the browser?

Only Unusual Units Converter is browser-friendly — it returns CORS headers over HTTPS. OpenAI API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are OpenAI API and Unusual Units Converter free for commercial use?

OpenAI API has unclear commercial terms, and Unusual Units Converter 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.