KI Altus 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 Altus

$881 – $1,516

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

$1,044

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

Differences at a glance

KI AltusHerman Miller Cosm High Back

Price: $881 – $1,516$1,925 – $2,400
Seat height: 17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)14.8–21.4 in (37.6–54.4 cm)
Seat depth: 17.25–19.75 in (43.8–50.2 cm); 15.5–18 in (39.4–45.7 cm)15.9 in (40.4 cm)
Load capacity: supports up to 400 pounds350 lb (158.8 kg)
Arms: Adjustable arms, fixed arms, or armlessLeaf 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 Altus or the Herman Miller Cosm High Back?

The KI Altus is cheaper to start: $881 versus $1,925 for the Herman Miller Cosm High Back at the brand stores (Sep 2026).

What do owners mention most?

Back support for the KI Altus, and comfort for the Herman Miller Cosm High Back, based on review summaries.