Vitra ID Soft vs Humanscale Diffrient Smart

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

Vitra

Vitra ID Soft

From $995

Humanscale

Humanscale Diffrient Smart

$1,987

$992

lower starting price for Vitra ID Soft than Humanscale Diffrient Smart at the brand stores

Differences at a glance

Vitra ID SoftHumanscale Diffrient Smart

Price: From $995$1,987
Seat height: 400–520 mm (15¾″–20½″), measured with 64 kg load; 450 mm (17¾″) fixed seat height16.5” – 22.8”
Seat depth: 400–450 mm; 380 mm16.25” - 18.75” seat depth adjustment range
Recline: FlowMotion mechanism, lockable in upright sitting position, optional synchronised forward tilt; or optional AutoMotion mechanism with automatic weight adjustment and two backrest tension settings (hard or soft). No recline angle published.18° recline + 8° backrest tilt
Arms: 2D armrests (height, width) or 3D armrests (height, width, depth, 360° swivel); ring armrests for conference use; also without armrests. Armrest height above seat 195–295 mm (7¾″–11½″)Fixed Duron Arms / Adjustable Duron Arms / 4D Adj Duron Arms / Armless
Warranty: 5 years (Vitra Inc. Limited Warranty, sales via the Vitra online shop)15-year, 24/7 warranty

From 4 Vitra ID Soft and 2 Humanscale Diffrient Smart user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Vitra ID Soft or the Humanscale Diffrient Smart?

The Vitra ID Soft is cheaper to start: $995 versus $1,987 for the Humanscale Diffrient Smart at the brand stores (Oct 2026).

What do owners mention most?

Price and value for the Vitra ID Soft, and comfort for the Humanscale Diffrient Smart, based on review summaries.