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Compare Keychron K4 Max vs V5 Ultra Differences Side by Side

This comparison is for buyers deciding between two 96% wireless mechanical keyboards from Keychron: the K4 Max and the V5 Ultra. The decision is hard because both share a similar layout, hot-swappable switches, PBT keycaps, and support for the Keychron Launcher web app. However, they differ significantly in internal design, with the K4 Max featuring a steel plate and the V5 Ultra using a gasket mount with a polycarbonate plate. The K4 Max runs QMK firmware, while the V5 Ultra uses ZMK firmware and boasts a higher 8000 Hz polling rate.

87
Keychron K4 Max QMK Wireless Mechanical Keyboard ISO Layout Collection
92
Keychron V5 Ultra 8K Wireless Custom Mechanical Keyboard

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5.0 (1)
3.0 (1)
  • Released in 2025
  • Built with the ISO, ANSI layout standard
  • Uses a PCB Mount mounting style
  • Runs at a 1000 Hz polling rate
  • Weighs about 1290 g
  • Sized at 31 x 391 x 140 mm
  • Made with a ABS case
  • Offers Yes, Rgb, South-face, Rgb South-face, White, White South-face RGB lighting
  • Released in 2026
  • Built with the ANSI layout standard
  • Comes with a knob
  • Connects via USB-C
  • Uses a Gasket Mount mounting style
  • Runs at a 8000 Hz polling rate
  • Weighs about 983 g
  • Sized at 30 x 392 x 149 mm
  • Made with a Metal, Plastic, ABS case
  • Offers Yes, Rgb, White, South-face, Rgb South-face, White South-face RGB lighting
Scores
  • Performance: 82
  • Build Quality: 80.3
  • Productivity: 89.4
  • Customizability: 93
  • Portability: 50.8
Scores
  • Performance: 91.2
  • Build Quality: 82
  • Productivity: 97.5
  • Customizability: 95.1
  • Portability: 56.3
Name
Keychron K4 Max
Name
Keychron V5 Ultra
Release year
2025
Release year
2026
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
96%
Layout Standard
ISO, ANSI
Layout Standard
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, 2.4 GHz, Wired, 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
PCB Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face, White, White South-face
Backlight
 
Rgb, White, South-face, White South-face
Case Colors
Case Colors
Case Material
ABS
Case Material
Metal, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
31 x 391 x 140 mm
Dimensions
30 x 392 x 149 mm
Weight
1290g
Weight
983g
*Something incorrect or missing? Please
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Pros and Trade-offs

If you value a firm typing feel and want QMK firmware for deep customization, go with the Keychron K4 Max. If you prioritize a faster polling rate for gaming and a quieter, gasket-mounted typing experience, the Keychron V5 Ultra is the better choice. Both are strong options, but your decision should hinge on firmware preference and the feel of the typing plate.

Keychron K4 Max

  • +Steel plate provides a firm typing feel and adds weight for stability, as mentioned in the vendor description.
  • +QMK firmware support offers extensive customization for key mapping and macros.
  • +Includes three layers of acoustic foam (IXPE, PET, EPDM) for a superior sound and typing experience.
  • −Heavier at 1290 grams, making it less portable than the V5 Ultra.
  • −1000 Hz polling rate is lower than the V5 Ultra's 8000 Hz, which may matter for competitive gaming.
  • −The steel plate may produce a louder typing sound compared to a gasket mount with a PC plate.

Keychron V5 Ultra

  • +Gasket mount design with a PC plate reduces acoustic resonance for a softer, quieter typing experience.
  • +8000 Hz polling rate in both wired and 2.4 GHz modes for ultra-responsive performance.
  • +Up to 660 hours of battery life with backlight off, based on the vendor's claim.
  • +Pre-lubed Keychron Silk POM switches offer smooth keystrokes and durability.
  • −Uses ZMK firmware instead of QMK, which may be less familiar to some users seeking advanced custom layouts.
  • −The top case is made of a lightweight polymer, which may feel less premium than a metal case to some users.

Which Keyboard Is Better for Your Needs?

For gaming, the V5 Ultra's 8000 Hz polling rate gives it a clear edge in responsiveness. In office and content creation use cases, both keyboards perform similarly due to their shared layout and software features. Programmers may prefer the K4 Max for its QMK firmware, while travelers and modders will favor the V5 Ultra for its lighter weight and gasket mount design.

GamingKeychron V5 Ultra
  • •The V5 Ultra supports an 8000 Hz polling rate in both wired and 2.4 GHz wireless modes for lower latency.
  • •The gasket mount and PC plate provide a softer, quieter typing experience that can reduce fatigue during long sessions.
OfficeTie
  • •Both keyboards offer a 96% layout with a dedicated number row for data entry.
  • •Both include PBT keycaps and support for sound dampening foams for a quieter office environment.
  • •Both feature Mac and Windows compatibility with included keycaps for each system.
ProgrammingKeychron K4 Max
  • •The K4 Max runs QMK open-source firmware, which is widely preferred by the programming community for custom layouts and macros.
  • •The steel plate provides a firm, responsive typing feel that some programmers prefer for precise keystrokes.
TravelKeychron V5 Ultra
  • •The V5 Ultra is lighter at 983 grams compared to the K4 Max's 1290 grams, making it easier to carry.
  • •The V5 Ultra offers up to 660 hours of battery life with the backlight off, reducing the need for frequent charging on the go.
ModdingKeychron V5 Ultra
  • •The V5 Ultra's gasket mount design is a popular starting point for modding, offering a more cushioned typing feel.
  • •The V5 Ultra includes multiple layers of acoustic foam like EPDM and PET film for more nuanced sound customization.
Content CreationTie
  • •Both include multi-media keys and knob support for quick control over audio and editing software.
  • •Both support Keychron Launcher for custom macro creation, streamlining repetitive tasks.

Frequently Asked Questions (FAQ)

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