What is TTFB by Navigation AI speed
TTFB by Navigation AI speed show Time to First Byte (TTFB) grouped by how quickly a navigation was delivered — either via standard navigation or through Navigation AI-enhanced experiences.
This lens breaks down backend responsiveness into four tiers based on real user navigation speeds:
Category | Description |
Standard | Navigations with no Navigation AI assistance - traditional page loads |
Faster | Optimized navigations with improved speed, but still above 1s |
Semi-instant | Optimized navigations loading in 300ms to 1s - feels fast to most users |
Truly instant | Navigations under 300ms - often perceived as instant |
Healthy TTFB by Navigation AI speed sample
Should you worry
A healthy breakdown shows that your Truly instant and Semi-instant categories have noticeably lower TTFB than Standard. This means Navigation AI is effectively reducing backend wait time — either by preconnecting earlier, caching smarter, or prerendering pages before the user even clicks.
The greener the bar, the snappier the response from your server or CDN.
Unhealthy TTFB by Navigation AI speed sample
In the example below, Standard is the second dominant navigation type, and even Faster navigations show high TTFB values. This often means:
Your backend is slow to respond, even with prediction in place
Prerendered navigations are missing or delayed for certain routes
TTFB is bottlenecked by unoptimized APIs, dynamic personalization, or lack of caching
Even if Navigation AI delivers the page faster in terms of LCP, users still experience slow response times if the server can't keep up.
This lens is key to identifying pages where speculative navigation works — but backend latency still drags performance down.
Resolving unhealthy TTFB by Navigation AI speed
Go-to action plan to resolve an unhealthy TTFB by Navigation AI speed:
Ask Uxi to analyze your TTFB by Navigation AI speed values and suggest improvements.
Use Filters to isolate routes or components where TTFB is highest, even with AI optimization.
Simulate TTFB of the suspected lens to see if fixing it will resolve the TTFB by Navigation AI speed. If yes, this is where the resolution focus should be.
Use an automated optimization tool like Navigation AI to improve your TTFB by Navigation AI speed values.
Once you’ve improved TTFB, set an alert to be the first to know if it starts worsening again.
Try it yourself
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