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These articles help you figure out where, why, and what to do about it.
The wait before an AI starts answering, and the point where people notice it.
What TTFT measures, what counts as fast, why it can be slow, and how ChatGPT, Claude and Grok compare in our daily measurements.
It depends on what you're measuring.
A simple guide to deciding whether 340 ms is fast or slow for a website, API, static file, or AI response.
Measure worldwide latency without running your own infrastructure.
A practical guide to checking API latency from several regions, understanding what the numbers mean, and turning that into an infrastructure decision.
You've probably never measured it. It's probably the biggest performance problem you have.
Time to First Byte controls when rendering can begin, which is why it quietly drags down LCP, Core Web Vitals, and search performance.
The answer used to be simple. It isn't anymore.
The Google Fonts answer changed after shared browser caches disappeared. The real decision now is where your server lives.