Comparison
DLSS 5 vs DLSS 4
DLSS 4 is still the broad generation label many people know, but DLSS 5 is the newly announced step in NVIDIA's roadmap that emphasizes neural rendering and photoreal fidelity rather than only performance.
Why people still search DLSS 5 vs DLSS 4
Many users do not search for point releases. They search for the big number they remember. That makes DLSS 5 vs DLSS 4 a valid and useful comparison page even though DLSS 4.5 is the tighter technical baseline.
This page should answer the broad question first, then explain where the more precise DLSS 4.5 comparison fits in.
The practical takeaway
If you want the current, shipping-era feature stack, the DLSS 4 family is still the relevant reference. If you want to understand the next visual leap NVIDIA is promising, DLSS 5 is the page to watch.
That means users comparing the two are often comparing present tense versus near future, not two products that are equally available today.