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Compare Keychron K4 QMK V3 vs K5 Ultra Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron K4 QMK V3 and Keychron K5 Ultra 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.

68
Keychron K4 QMK Wireless Mechanical Keyboard (Version 3)-US ANSI Layout
85
Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection

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  • Released in 2025
  • Has Tactile, Linear switch options
  • Available in a 96% layout
  • Built with the ANSI layout standard
  • Made with a Aluminum case
  • Offers Yes, Rgb, White RGB lighting
  • Released in 2026
  • Has Tactile, Linear, Clicky switch options
  • Features a low-profile design
  • Available in a 100% layout
  • Built with the ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT, ISO, ANSI layout standard
  • Comes with a knob
  • Connects via USB-C
  • Supports VIA configuration
  • Features N-key rollover
  • Has built-in sound dampening
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Runs at a 8000 Hz polling rate
  • Equipped with a 2600 mAh battery
  • Weighs about 566 g
  • Made with a ABS, Wood, Metal case
  • Features PBT keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 61.6
  • Build Quality: 67.4
  • Productivity: 56.6
  • Customizability: 76.2
  • Portability: 44
Scores
  • Performance: 91.3
  • Build Quality: 75.8
  • Productivity: 92.7
  • Customizability: 90.1
  • Portability: 56.7
Name
Keychron K4 QMK V3
Name
Keychron K5 Ultra
Release year
2025
Release year
2026
Switch Options
Tactile, Linear
Switch Options
Tactile, Linear, Clicky
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
100%
Layout Standard
ANSI
Layout Standard
ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT, ISO, 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
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
8000 Hz
Battery capacity
-
Battery capacity
2600 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
-
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
Aluminum
Case Material
ABS, Wood, Metal
Keycaps Material
-
Keycaps Material
PBT
Dimensions
-
Dimensions
-
Weight
-
Weight
566g
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