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Head to head · Prices checked Nov 10, 2026

Apos Gizmo Engineering GK6 vs Keychron 81 Pro

Get the Keychron 81 Pro for knob.

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Quick verdict

Which one should you get?

Get the

Apos Gizmo Engineering GK6

Build quality in the top 40% of Numpad boards under $300.

Rules this board out

  • Numpad only. This is not a full keyboard.

Get the

Keychron 81 Pro

Knob

Build quality in the top 5% of 75% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No numpad.

What actually differs

The differences that matter

Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.

Apos Gizmo Engineering GK6

Keychron 81 Pro

  • Layout size

    Numpad

    75%

  • Connection

    Wired

    Bluetooth, Wired

    Wireless for several devices and wired for lower latency

  • Ergonomics

    Ortholinear

    Standard

  • Case material

    Aluminum, Steel

    Aluminum

  • Knob

    No

    Yes

KeebFinder scores

How we score
  • Apos Gizmo Engineering GK6
  • Keychron 81 Pro
Performance
66
82
Build quality
72
87
Productivity
85
97
Customizability
80
94
Portability
77
82

What they share

  • Hot-swappable
  • QMK
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Apos Gizmo Engineering GK6 vs Keychron 81 Pro specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

14 of 26 specs differ

Apos Gizmo Engineering GK6

Keychron 81 Pro

Typing & switches

Switch options

—
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

—
Gasket Mount, Plate Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

Numpad
75%

Layout standard

ANSI
ANSI

Ergonomics

Ortholinear
Standard

Knob

No
Yes

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Wired
Bluetooth, Wired

Max polling rate

—
1,000 Hz

Battery

Wired only
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum, Steel
Aluminum

Plate material

Aluminum, Steel
Polycarbonate

Keycaps

PBT
PBT

Weight

810 g
1,887 g

Dimensions

31 x 250 x 116 mm
47 x 338 x 151 mm

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2023

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Lowest price across stores, Amazon excluded.

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