Over the last seven days, TweetStream's median X post detection time was 165 ms, timed from each post's X timestamp.
Current X/Twitter measurements
The cards cover every monitored account; the table lists up to ten individually.
Data through Oct 21, 2026, 18:05 UTCLast 24 hours
Oct 20, 2026, 18:05 UTC to Oct 21, 2026, 18:05 UTCLast 7 days
Oct 14, 2026, 18:05 UTC to Oct 21, 2026, 18:05 UTCUltra Speed priority delivery
Ultra Speed acts once a TweetStream server receives the post: posts from your selected accounts go out up to 50 ms ahead of standard delivery, and their follow and unfollow alerts 250 ms sooner.
Results by account
| Account | Last 24 hours | Last 7 days | ||||||
|---|---|---|---|---|---|---|---|---|
| p25 | p50 median | p95 | Samples | p25 | p50 median | p95 | Samples | |
| 99 ms | 139 ms | 214 ms | 68 | 99 ms | 136 ms | 205 ms | 493 | |
| 122 ms | 143 ms | 190 ms | 4 | 115 ms | 148 ms | 244 ms | 57 | |
| 131 ms | 137 ms | 220 ms | 6 | 102 ms | 131 ms | 220 ms | 62 | |
| 143 ms | 165 ms | 328 ms | 37 | 141 ms | 162 ms | 279 ms | 173 | |
| 158 ms | 164 ms | 295 ms | 10 | 150 ms | 168 ms | 295 ms | 61 | |
| 119 ms | 147 ms | 806 ms | 51 | 109 ms | 148 ms | 723 ms | 248 | |
| 112 ms | 142 ms | 201 ms | 41 | 112 ms | 150 ms | 224 ms | 161 | |
| 90 ms | 128 ms | 175 ms | 3 | 90 ms | 138 ms | 283 ms | 24 | |
| 103 ms | 134 ms | 344 ms | 15 | 99 ms | 134 ms | 355 ms | 121 | |
| 150 ms | 150 ms | 212 ms | 2 | 126 ms | 153 ms | 212 ms | 31 | |
Download the data
Questions about these numbers
Why do latency numbers differ between vendors?
Vendors start the clock at different points: their own server, their client, or X's timestamp. This report starts at X's timestamp, so compare it only with numbers that start there too.
What does the time leave out?
The WebSocket hop to your host, which depends on where your host runs, plus your own processing and order execution.
What do p25, p50 and p95 mean?
Each is the time within which 25%, 50% or 95% of posts were detected. Lower is faster, and single posts vary with load on X.
How can I test latency on my own watchlist?
Start a trial, track the accounts you trade on, and connect from your own host. Log when each post arrives and compare it with its X timestamp.