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Compare Keychron V4 Max vs V6 Ultra Differences Side by Side

This comparison is for buyers deciding between Keychron's compact and full-size wireless offerings. The V4 Max is a 60% keyboard focused on deep customization with QMK/VIA, while the V6 Ultra is a 100% layout built for ultra-low latency with an 8000 Hz wireless polling rate. The decision hinges on whether you prioritize desk space savings and firmware flexibility or need a full number pad and the highest possible response speed for gaming.

92
Keychron V4 Max QMK/VIA Wireless Custom Mechanical Keyboard
83
Keychron V6 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection

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0.0 (0)
5.0 (3)
  • Released in 2024
  • Has Linear, Tactile, Clicky switch options
  • Available in a 60% layout
  • Built with the ANSI layout standard
  • Supports QMK firmware
  • Supports VIA configuration
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Runs at a 1000 Hz polling rate
  • Weighs about 645 g
  • Sized at 28 x 123 x 305 mm
  • Made with a Plastic, ABS case
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Released in 2026
  • Has Tactile, Linear, Clicky switch options
  • Available in a 100% layout
  • Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-UK, ANSI layout standard
  • Provides dedicated media keys
  • Supports Wired, Wired only, Bluetooth, 2.4 GHz, Wireless connectivity
  • Runs at a 8000 Hz polling rate
  • Weighs about 1130 g
  • Sized at 31 x 448 x 149 mm
  • Made with a Plastic, ABS, Aluminum, Metal case
  • Offers Yes, Rgb, White, South-face, Rgb South-face, White South-face RGB lighting
Scores
  • Performance: 78.5
  • Build Quality: 85.7
  • Productivity: 94.8
  • Customizability: 97.4
  • Portability: 88.4
Scores
  • Performance: 89.4
  • Build Quality: 77
  • Productivity: 90.8
  • Customizability: 79
  • Portability: 56.2
Name
Keychron V4 Max
Name
Keychron V6 Ultra
Release year
2024
Release year
2026
Switch Options
Linear, Tactile, Clicky
Switch Options
Tactile, Linear, Clicky
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
60%
Layout Size
100%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-UK, 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
Wired, Wired only, Bluetooth, 2.4 GHz, Wireless
Polling Rate
1000 Hz
Polling Rate
8000 Hz
Battery capacity
4000 mAh
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
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face
Backlight
 
Rgb, White, South-face, White South-face
Case Colors
Case Colors
Case Material
Plastic, ABS
Case Material
Plastic, ABS, Aluminum, Metal
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
28 x 123 x 305 mm
Dimensions
31 x 448 x 149 mm
Weight
645g
Weight
1130g
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Pros and Trade-offs

Your primary need dictates the choice. If you require a full number pad, media keys, and the absolute lowest latency for gaming, the Keychron V6 Ultra is the clear option. If you value a compact, portable size for a mobile setup or want maximum firmware customization with QMK/VIA and a barebones start, the Keychron V4 Max is the better keyboard. Consider how much you use the number pad and how important ultra-high polling rate is versus deep programmability.

Keychron V4 Max

  • +Extremely portable 60% layout measuring 305 x 123 mm and weighing 645g.
  • +Supports QMK and VIA open-source firmware for deep customization.
  • +Available as a DIY kit/barebones for building from scratch.
  • +Includes both Type-C and Type-A 2.4 GHz receivers with magnetic storage.
  • +Gasket mount design with a polycarbonate plate and sound-dampening foam.
  • −Lower 1000 Hz polling rate compared to the V6 Ultra's 8000 Hz.
  • −60% layout lacks dedicated arrow keys, function row, and number pad.
  • −No dedicated media keys or knob mentioned in its core specifications.

Keychron V6 Ultra

  • +High 8000 Hz polling rate in both wired and 2.4 GHz wireless modes.
  • +Full-size 100% layout includes a number pad and dedicated multi-media keys.
  • +Claimed battery life of up to 660 hours with backlight off.
  • +Features multiple acoustic foam layers, including EPDM foam and PET films.
  • +Includes a knob for media control and uses ZMK firmware with a web launcher.
  • −Large and heavy at 149 x 448 mm and 1130g, unsuitable for frequent travel.
  • −Uses ZMK firmware instead of the more established QMK/VIA of the V4 Max.
  • −Only available as a pre-built unit, not as a barebones kit.

Which Keyboard Is Better for Your Needs?

The V6 Ultra wins for office work, gaming, and content creation due to its full layout, media keys, and high 8000 Hz polling rate. The V4 Max is the clear choice for travel and has an edge for modders due to its QMK/VIA support and barebones kit option. For programming, the choice is a tie and depends on whether you value the V4 Max's firmware flexibility or the V6 Ultra's out-of-the-box full layout.

GamingKeychron V6 Ultra
  • •The V6 Ultra has an 8000 Hz polling rate in both wired and 2.4 GHz wireless modes, compared to 1000 Hz on the V4 Max.
  • •Its full-size layout includes dedicated media keys, which the V4 Max lacks due to its 60% form factor.
OfficeKeychron V6 Ultra
  • •The V6 Ultra's 100% layout includes a dedicated number pad, essential for data entry.
  • •It features multi-media keys for quick volume and playback control.
  • •The manufacturer claims an exceptionally long battery life of up to 660 hours with the backlight off.
ProgrammingTie
  • •The V4 Max supports QMK and VIA for deep, open-source key remapping and macro programming.
  • •The V6 Ultra uses ZMK firmware and a web-based launcher for customization, though its open-source nature is stated for security.
  • •Layout preference is key: the V4 Max saves desk space, while the V6 Ultra offers a full layout without layers for arrow and function keys.
TravelKeychron V4 Max
  • •The V4 Max is a 60% size (305 x 123 mm) and weighs 645g, making it significantly more portable.
  • •The V6 Ultra is a 100% size (149 x 448 mm) and weighs 1130g.
  • •Both have wireless connectivity and a 4000mAh battery, but the V4 Max's compact form is easier to pack.
ModdingKeychron V4 Max
  • •The V4 Max explicitly lists QMK and VIA support, offering extensive firmware customization.
  • •It is available in a DIY kit/barebones configuration, allowing you to choose all components.
  • •Both are hot-swappable and gasket mounted, but the V4 Max's metadata emphasizes its customizability with explicit kit support.
Content CreationKeychron V6 Ultra
  • •The V6 Ultra's full layout provides a number pad for quick numerical input in editing software.
  • •It includes a knob and dedicated media keys for timeline scrubbing and volume control.
  • •The V4 Max's 60% layout requires layers or separate keypads for similar functions.

Frequently Asked Questions (FAQ)

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