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Compare Keychron K3 Ultra vs K4 HE Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron K3 Ultra and Keychron K4 HE and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

78
Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard
92
Keychron K4 HE Wireless Magnetic Switch Custom Keyboard ISO Layout Collection

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0.0 (0)
4.3 (13)
  • Released in 2026
  • Has Linear, Tactile, Clicky switch options
  • Features a low-profile design
  • Available in a 75% layout
  • Built with the ANSI, ISO layout standard
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Runs at a 8000 Hz polling rate
  • Offers Yes, Rgb RGB lighting
  • Released in 2025
  • Has Magnetic, Linear, Tactile, Clicky switch options
  • Available in a 96% layout
  • Built with the ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ISO-SW, ISO-Nordic, ANSI layout standard
  • Connects via USB-C
  • Utilizes Hall effect sensors
  • Features N-key rollover
  • Enables rapid trigger functionality
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Runs at a 1000 Hz polling rate
  • Equipped with a 4000 mAh battery
  • Weighs about 1090 g
  • Sized at 41 x 377 x 126 mm
  • Made with a Plastic, Aluminum, Wood, ABS case
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Scores
  • Performance: 86.5
  • Build Quality: 69.2
  • Productivity: 70
  • Customizability: 86.5
  • Portability: 74.6
Scores
  • Performance: 92.4
  • Build Quality: 87.1
  • Productivity: 94.3
  • Customizability: 89.9
  • Portability: 56.4
Name
Keychron K3 Ultra
Name
Keychron K4 HE
Release year
2026
Release year
2025
Switch Options
Linear, Tactile, Clicky
Switch Options
Magnetic, Linear, Tactile, Clicky
Profile
Low Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
96%
Layout Standard
ANSI, ISO
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ISO-SW, ISO-Nordic, ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless, 2.4 GHz
Polling Rate
8000 Hz
Polling Rate
1000 Hz
Battery capacity
-
Battery capacity
4000 mAh
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Material
-
Case Material
Plastic, Aluminum, Wood, ABS
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
-
Dimensions
41 x 377 x 126 mm
Weight
-
Weight
1090g
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