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0x vs VALR

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

API0xHEALTHY91VALRHEALTHY89
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms622696
P95 · ms34213273
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

0x vs VALR: common questions

Which is more reliable, 0x or VALR?

Both are neck-and-neck — 0x and VALR each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, 0x or VALR?

0x has the lower median latency in our checks — 0x responds in 622 ms versus VALR at 696 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 0x and VALR need an API key?

0x needs no key, while VALR requires a free API key. If you want to start calling without signup, reach for 0x first.

Can I call 0x and VALR from the browser?

Only 0x is browser-friendly — it returns CORS headers over HTTPS. VALR needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are 0x and VALR free for commercial use?

0x has unclear commercial terms, and VALR 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.