23 Sept 2026
When the model you build on stops answering
Our own count: two of the 122 AI models we publish record a date on which they stop being served. So we read nine providers’ own…
Real-user monitoring bolted onto an uptime checker: one async script records LCP, CLS, INP and FCP from actual visitors, alongside DNS, connection, time to first byte and total load time on every page load.
Not yet independently verified. The real-user-monitoring feature is marked "New" on the vendor’s own site but carries no release date, so the 22 September 2026 date rests only on the Product Hunt listing. The free allowance of 1,000 page views a month is on the vendor’s page; the paid rates were not published there when this was read. We will update this when it can be confirmed, and remove this note.
Pulsetic is an uptime-monitoring service from Designmodo Inc., a New York company, that checks a site as often as every thirty seconds from fifteen locations and publishes status pages and alerts. Real-user monitoring is its newest addition: instead of inferring page speed from a synthetic check run in a datacentre, it collects the browser’s own measurements from the people actually using the site — the four Core Web Vitals plus the network timings that explain them — by adding a single asynchronous script. The free tier includes a thousand page views a month, which is enough to see whether the numbers are believable and not enough to run anything on; the paid rates were not published on the site when this was read. The value of this pairing is that it closes a common argument: a synthetic check says the site is up and fast, and customers say it is slow, and without field data nobody can settle which is true. What it does not do is tell you why a particular visitor was slow, which is where a full tracing product starts. For a small team already paying for uptime checks, adding field measurements to the same bill is a reasonable first step rather than a replacement for one.
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Updated 9/23/2026
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