Bitfinex vs Bitstamp: which API is more reliable?
Over the 60 days of a 90-day window up24 has measured so far, Bitfinex was more available — 99.99% against 99.96% of checks answered, and Bitfinex was quicker — a typical p95 of 59ms against 145ms.
Both venues are probed by the same probes on the same schedule — 90-day window, one request every 5 seconds, percentiles over successful responses only and measured from Lauterbourg, FR. Neither exchange reports any of this; up24 measures it.
| MEASUREMENT | ||
|---|---|---|
Uptime · 90d | 99.99% | 99.96% |
REST checks behind it | 3,082,681 | 3,053,129 |
Days measured | 62 of 90 | 60 of 90 |
Typical p50 | 20ms (better) | 34ms |
Typical p95 | 59ms (better) | 145ms |
Worst day | 99.90% | 99.80% |
up24 incidents · 90d | 62 | 189 |
WS delivering · 24h | 99.93% | 100.00% (better) |
WS connected · 24h | 99.99% | 100.00% (better) |
Reconnects · 24h | 32 | 0 (better) |
Sequence gaps · 24h | 0 | 0 |
Longest feed silence · 24h | 51s (better) | 1 min 35s |
Own status feed | statuspage | statuspage |
Incidents they acknowledged | 0 of 62 | 7 of 189 |
Median gap to their own notice | — | 1h 34m later |
BITFINEX
Over the 62 days of a 90-day window up24 has measured so far, Bitfinex's REST API answered 99.99% of 3,082,681 checks, with a typical p95 of 59ms and a typical p50 of 20ms. Its worst day was 31 AUG 2026, at 99.90%. up24 opened 62 incidents against it in that window — uptime counts REST checks only, and an incident is as often a WebSocket feed that stalled or a socket that dropped.
Over the last 24 hours Bitfinex's WebSocket feeds were delivering 99.93% of the time on a socket up24 held open 99.99% of it, across 32 reconnects, with 0 sequence gaps and a longest silence of 51s.
BITSTAMP
Over the 60 days of a 90-day window up24 has measured so far, Bitstamp's REST API answered 99.96% of 3,053,129 checks, with a typical p95 of 145ms and a typical p50 of 34ms. Its worst day was 19 AUG 2026, at 99.80%. up24 opened 189 incidents against it in that window — uptime counts REST checks only, and an incident is as often a WebSocket feed that stalled or a socket that dropped.
Over the last 24 hours Bitstamp's WebSocket feeds were delivering 100.00% of the time on a socket up24 held open 100.00% of it, across 0 reconnects, with 0 sequence gaps and a longest silence of 1 min 35s.
Uptime is ok checks over total checks, REST only. Both percentiles are medians of daily percentiles over the window rather than the window's own — percentiles do not compose, and the daily rollup is the finest grain that outlives raw retention. Green marks the better column on that row and nothing else: a venue with no measurement never wins one.