ParlayAPI vs Vector Express v2.0
Same instrument, two spec sheets — measured, not claimed.
ParlayAPI vs Vector Express v2.0: common questions
Which is more reliable, ParlayAPI or Vector Express v2.0?
On our scheduled checks, Vector Express v2.0 leads on measured uptime — ParlayAPI at 87.5% versus Vector Express v2.0 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.
Which is faster, ParlayAPI or Vector Express v2.0?
ParlayAPI has the lower median latency in our checks — ParlayAPI responds in 211 ms versus Vector Express v2.0 at 383 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 ParlayAPI and Vector Express v2.0 need an API key?
Vector Express v2.0 needs no key, while ParlayAPI requires a free API key. If you want to start calling without signup, reach for Vector Express v2.0 first.
Can I call ParlayAPI and Vector Express v2.0 from the browser?
Neither sends browser-friendly CORS headers reliably, so call ParlayAPI and Vector Express v2.0 from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are ParlayAPI and Vector Express v2.0 free for commercial use?
ParlayAPI has unclear commercial terms, and Vector Express v2.0 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.