KI Signia vs Herman Miller Cosm High Back

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

KI Signia

$930 – $1,076

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

$995

lower starting price for KI Signia than Herman Miller Cosm High Back at the brand stores

Differences at a glance

KI SigniaHerman Miller Cosm High Back

Price: $930 – $1,076$1,925 – $2,400
Seat height: 17.5–22 in (44.5–55.9 cm)14.8–21.4 in (37.6–54.4 cm)
Seat depth: 17–20 in (43.2–50.8 cm)15.9 in (40.4 cm)
Arms: Armless, fixed reverse cantilever conference arms, 1D adjustable arms, or 4D adjustable armsLeaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
Warranty: Lifetime12-year, 3-shift warranty, with limited exceptions

Which is cheaper, the KI Signia or the Herman Miller Cosm High Back?

The KI Signia is cheaper to start: $930 versus $1,925 for the Herman Miller Cosm High Back at the brand stores (Sep 2026).