Blockchair vs OKEx
Same instrument, two spec sheets — measured, not claimed.
Blockchair vs OKEx: common questions
Which is more reliable, Blockchair or OKEx?
On our scheduled checks, Blockchair leads on measured uptime — Blockchair at 98.0% versus OKEx at 85.3% 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, Blockchair or OKEx?
OKEx has the lower median latency in our checks — Blockchair responds in 729 ms versus OKEx at 192 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 Blockchair and OKEx need an API key?
Blockchair needs no key, while OKEx requires a free API key. If you want to start calling without signup, reach for Blockchair first.
Can I call Blockchair and OKEx from the browser?
Yes — both Blockchair and OKEx 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 Blockchair and OKEx free for commercial use?
Blockchair has unclear commercial terms, and OKEx 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.