Humanscale Diffrient World vs KI Altus

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Humanscale

Humanscale Diffrient World

$1,431

KI Altus

$881 – $1,516

$550

lower starting price for KI Altus than Humanscale Diffrient World at the brand stores

Differences at a glance

Humanscale Diffrient WorldKI Altus

Price: $1,431$881 – $1,516
Seat height: 15.6” – 20.75”17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)
Load capacity: up to 400 lbssupports up to 400 pounds
Arms: Duron Arms: Armless / Fixed / Height Adjustable / 4DAdjustable arms, fixed arms, or armless
Lumbar support: Tri-paneled Form Sensing mesh back (no manual lumbar adjustment)Mesh chair: optional adjustable lumbar (height and depth); fabric chair: automatic lumbar support
Warranty: 15 Years, Components and Parts | 5 Years, Fabric and CushionsLifetime

Which is cheaper, the Humanscale Diffrient World or the KI Altus?

The KI Altus is cheaper to start: $881 versus $1,431 for the Humanscale Diffrient World at the brand stores (Sep 2026).

What do owners mention most?

Comfort for the Humanscale Diffrient World, and back support for the KI Altus, based on review summaries.