KI Altus vs Humanscale Diffrient Smart
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$1,106
lower starting price for KI Altus than Humanscale Diffrient Smart at the brand stores
Differences at a glance
Sources
- Altus Seating Price List, KI ↗Checked Sep 29, 2026
- Ergonomic Mesh Back Office Chair | Diffrient Smart | Humanscale ↗Checked Sep 29, 2026
- Humanscale Diffrient Smart brochure ↗Checked Sep 29, 2026
- Altus Task Chair product page, KI ↗Checked Sep 29, 2026
KI AltusHumanscale Diffrient Smart
- Price
- $881 – $1,516$1,987
- Seat height
- 17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)16.5” – 22.8”
- Seat depth
- 17.25–19.75 in (43.8–50.2 cm); 15.5–18 in (39.4–45.7 cm)16.25” - 18.75” seat depth adjustment range
- Load capacity
- supports up to 400 poundsup to 400 lbs.
- Arms
- Adjustable arms, fixed arms, or armlessFixed Duron Arms / Adjustable Duron Arms / 4D Adj Duron Arms / Armless
- Lumbar support
- Mesh chair: optional adjustable lumbar (height and depth); fabric chair: automatic lumbar supportTri-panel Form-Sensing mesh adapts its lumbar support to each user (no manual lumbar adjustment)
- Warranty
- Lifetime15-year, 24/7 warranty
Questions
Which is cheaper, the KI Altus or the Humanscale Diffrient Smart?
The KI Altus is cheaper to start: $881 versus $1,987 for the Humanscale Diffrient Smart at the brand stores (Sep 2026).
What do owners mention most?
Back support for the KI Altus, and comfort for the Humanscale Diffrient Smart, based on review summaries.
