Humanscale World One vs KI Torsion Air

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

Humanscale

Humanscale World One

$705

KI Torsion Air

$904 – $944

$199

lower starting price for Humanscale World One than KI Torsion Air at the brand stores

Differences at a glance

Humanscale World OneKI Torsion Air

Price: $705$904 – $944
Seat height: 15.6 in - 20.7 in / 397 mm - 527 mm; 16 in - 21 in / 425 mm - 545; 18.1 in - 25.6 in / 460 mm - 651 mm18–23 in (45.7–58.4 cm)
Seat depth: 16.4 / 416 in; 17.9 / 454 in18.5 in (47.0 cm)
Recline: 17° Recline + 8° Backrest TiltTorsion flex back; gradually increasing resistance over the full 12 degrees of back flex
Arms: Armrest Height 9.5 in Fixed / 7.2 in - 10.75 in Adjustable (241.3 mm / 183 mm - 273 mm); options Adjustable Duron Arms, Fixed Duron Arms, No ArmsArms or armless
Warranty: 12 Years, Component and Parts; 5 Years, Fabric/CushionsLifetime

Which is cheaper, the Humanscale World One or the KI Torsion Air?

The Humanscale World One is cheaper to start: $705 versus $904 for the KI Torsion Air at the brand stores (Sep 2026).