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Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection

Keychron K5 Ultra

The Keychron K5 Ultra is a slim wireless mechanical keyboard designed for users who want a low-profile typing experience with flexible connectivity and extensive customization. It suits professionals or hobbyists who value a compact 100% layout and the ability to program macros through software. Its compatibility with multiple operating systems makes it a versatile choice for mixed environments.</p... Read more
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Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard (US ANSI Layout)

Keychron (DE)
Keychron (DE)
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$145
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Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection

Keychron (DE)
Keychron (DE)
No shipping to US
$145
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Compare Keychron K5 Ultra vs Nuphy Node 100 vs Lofree Flow100 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron K5 UltraNuphy Node 100Lofree Flow100
86
Keychron K5 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection
63
Nuphy Node 100 High Profile (ISO-DE) Keyboard
67
Flow100 Low-profile Mechanical Keyboard
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  • Has Tactile, Linear, Clicky switch options
  • Built with the ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT, ISO, ANSI layout standard
  • Comes with a knob
  • Supports QMK firmware
  • Supports VIA configuration
  • Has built-in sound dampening
  • Runs at a 8000 Hz polling rate
  • Equipped with a 2600 mAh battery
  • Weighs about 566 g
  • Made with a ABS, Wood, Metal case
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Has Clicky switch options
  • Built with the ANSI, ISO-DE, ISO layout standard
  • Runs at a 1000 Hz polling rate
  • Weighs about 787 g
  • Sized at 14 x 399 x 141 mm
  • Made with a ABS case
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
  • Released in 2024
  • Has Linear, Tactile switch options
  • Built with the ANSI layout standard
  • Supports Bluetooth, Wired, Wireless connectivity
  • Weighs about 738 g
  • Sized at 26 x 126 x 373 mm
  • Made with a Aluminum case
  • Offers Yes, Rgb, White RGB lighting
Scores
  • Performance: 91.1
  • Build Quality: 75.3
  • Productivity: 92.5
  • Customizability: 89.9
  • Portability: 56.5
Scores
  • Performance: 74.1
  • Build Quality: 56.8
  • Productivity: 65.4
  • Customizability: 58.5
  • Portability: 53.5
Scores
  • Performance: 63.2
  • Build Quality: 66.6
  • Productivity: 65.2
  • Customizability: 60.7
  • Portability: 56.1
Name
Keychron K5 Ultra
Name
Nuphy Node 100
Name
Lofree Flow100
Release year
2026
Release year
2026
Release year
2024
Switch Options
Tactile, Linear, Clicky
Switch Options
Clicky
Switch Options
Linear, Tactile
Profile
Low Profile
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
100%
Layout Size
100%
Layout Size
100%
Layout Standard
ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT, ISO, ANSI
Layout Standard
ANSI, ISO-DE, ISO
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless
Polling Rate
8000 Hz
Polling Rate
1000 Hz
Polling Rate
-
Battery capacity
2600 mAh
Battery capacity
3000 mAh
Battery capacity
3000 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, North-face
Backlight
 
Rgb, White
Case Colors
Case Colors
Case Colors
Case Material
ABS, Wood, Metal
Case Material
ABS
Case Material
Aluminum
Keycaps Material
PBT
Keycaps Material
-
Keycaps Material
PBT
Dimensions
-
Dimensions
14 x 399 x 141 mm
Dimensions
26 x 126 x 373 mm
Weight
566g
Weight
787g
Weight
738g
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Product Description

The Keychron K5 Ultra is a slim wireless mechanical keyboard designed for users who want a low-profile typing experience with flexible connectivity and extensive customization. It suits professionals or hobbyists who value a compact 100% layout and the ability to program macros through software. Its compatibility with multiple operating systems makes it a versatile choice for mixed environments.

Key Features

  • Supports 2.4 GHz wireless, Bluetooth, and wired connections, allowing seamless switching between devices and use cases.
  • Customizable key functions and macros via the Keychron Launcher web app, enabling personalized workflows on a full-size layout.
  • Powered by ZMK firmware, it offers an 8K polling rate in wireless mode, which can benefit users needing responsive input.
  • Low-profile spherical-angled (LSA) keycaps reduce finger travel and may improve typing speed and comfort.
  • ISO layout options include Spanish, French, German, Italian, and Portuguese, supporting various regional preferences.

Connectivity

The keyboard supports three connection modes: wired USB, Bluetooth, and 2.4 GHz wireless. This flexibility allows users to connect to multiple devices or switch between wired and wireless depending on their environment or battery status.

Compatibility and Customization

The K5 Ultra works with Windows, macOS, and Linux, covering most desktop operating systems. Its ZMK firmware enables advanced key remapping and macro programming through a web app, which is useful for users who want to tailor their keyboard layout without complex software installations.

Trade-offs

  • The ultra-slim design and low-profile keycaps may feel less tactile or satisfying for users accustomed to traditional mechanical switches with higher travel.
  • Battery life claims are vendor-stated; real-world endurance may vary depending on usage and connection mode.
  • Unknown details on case material and mounting style limit assessment of durability and typing acoustics.

Frequently Asked Questions (FAQ)

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