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Compare Keychron K4 V3 vs K5 Max Differences Side by Side

This comparison is for anyone torn between a compact traditional keyboard and an ultra-slim full-size. Both keyboards offer full layouts, but the K4 V3 packs a 96% layout into a smaller footprint with a standard high-profile typing angle, while the K5 Max provides a 100% layout in a significantly thinner aluminum-framed body. The decision is difficult because each offers different strengths: the K4 V3 has a larger battery and extensive sound dampening foams, while the K5 Max offers a 2.4 GHz connection for lower latency and a more modern, slim design.

91
Keychron K4 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
86
Keychron K5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection

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5.0 (4)
3.9 (22)
  • Released in 2025
  • Has Linear, Tactile, Clicky switch options
  • Available in a 96% layout
  • Built with the ISO, ISO-UK, ISO-DE, ISO-CH, ISO-Nordic, ANSI layout standard
  • Includes screw-in stabilizers
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 4000 mAh battery
  • Made with a Plastic case
  • Features PC, PBT keycaps
  • Offers Yes, Rgb, White, South-face, Rgb South-face, White South-face, North-face, Rgb North-face, White North-face RGB lighting
  • Released in 2024
  • Has Tactile, Linear, Clicky switch options
  • Features a low-profile design
  • Available in a 100% layout
  • Built with the ISO-DE, ISO-Nordic, ISO-UK, ISO, ANSI layout standard
  • Uses a PCB Mount mounting style
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 2000 mAh battery
  • Weighs about 720 g
  • Sized at 18 x 424 x 119 mm
  • Made with a ABS, Aluminum case
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 82
  • Build Quality: 84
  • Productivity: 95.2
  • Customizability: 97.6
  • Portability: 54.2
Scores
  • Performance: 82.4
  • Build Quality: 81.8
  • Productivity: 89.4
  • Customizability: 90.1
  • Portability: 54.8
Name
Keychron K4 V3
Name
Keychron K5 Max
Release year
2025
Release year
2024
Switch Options
Linear, Tactile, Clicky
Switch Options
Tactile, Linear, Clicky
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
100%
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-CH, ISO-Nordic, ANSI
Layout Standard
ISO-DE, ISO-Nordic, ISO-UK, 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
Bluetooth, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
4000 mAh
Battery capacity
2000 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
Tray Mount
Mount Style
PCB Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, South-face, White South-face, North-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
Plastic
Case Material
ABS, Aluminum
Keycaps Material
PC, PBT
Keycaps Material
PBT, ABS
Dimensions
-
Dimensions
18 x 424 x 119 mm
Weight
-
Weight
720g
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Pros and Trade-offs

The Keychron K4 V3 is the better choice if you prioritize heavy customization, a traditional keyboard feel, and longer battery life. Opt for the K5 Max if you need an ultra-slim keyboard for travel or want a stable 2.4 GHz wireless connection for work or gaming. Your choice ultimately hinges on whether you prefer a deep, moddable board or a sleek, low-profile desk companion.

Keychron K4 V3

  • +Larger 4000mAh battery provides extended wireless use.
  • +Uses standard MX-style switches and keycaps for wide aftermarket compatibility.
  • +Includes layers of sound dampening foam (IXPE, EPDM, PET) and screw-in steel stabilizers for a solid acoustic profile.
  • +96% layout offers a full numpad in a more space-saving footprint.
  • −Lacks a 2.4 GHz wireless connection, relying on Bluetooth 5.2 and wired mode.
  • −The plastic case and high-profile design may feel less modern compared to the slim aluminum of the K5 Max.

Keychron K5 Max

  • +Ultra-slim design with an aluminum frame makes it a stylish and portable full-size board.
  • +Offers a 2.4 GHz wireless connection with a 1000 Hz polling rate for competitive gaming.
  • +Low-profile Gateron switches provide a unique typing feel that's closer to a laptop but with mechanical tactility.
  • +Weighs only 720g, making it easy to transport.
  • −Smaller 2000mAh battery compared to the K4 V3's 4000mAh battery.
  • −Switch compatibility is limited to Gateron/Keychron low-profile mechanical switches.
  • −A 3 degree typing angle might be too flat for users who prefer a more traditional ergonomic tilt.

Which Keyboard Is Better for Your Needs?

The K5 Max takes the lead in gaming and travel thanks to its dedicated 2.4 GHz wireless dongle and ultra-slim design. For office work and modding, the K4 V3 is the stronger choice due to its larger battery, traditional MX-style switch support, and extensive sound-dampening foam. For programming and content creation, the two are evenly matched as both offer full programmability and platform support, leaving the final decision to personal preference on layout size and switch type.

GamingKeychron K5 Max
  • •Features a dedicated 2.4 GHz wireless connection for a stable and responsive connection, which is not available on the K4 V3.
  • •Has a 1000 Hz polling rate on both 2.4 GHz and wired modes.
  • •Low-profile switches can offer faster actuation for some users.
OfficeKeychron K4 V3
  • •Larger 4000mAh battery offers longer life between charges for a full work week.
  • •96% layout is more compact, saving desk space.
  • •Integrated screw-in stabilizers provide a more stable typing experience on large keys.
ProgrammingTie
  • •Both keyboards provide fully programmable keys and macros using QMK and VIA support.
  • •Both are compatible with macOS and Windows, with dedicated keycaps for each platform.
  • •Choice depends on preference: standard vs low-profile switches and size of the layout.
TravelKeychron K5 Max
  • •Ultra-slim low-profile design and lighter weight (720g) make it easier to pack in a bag.
  • •Includes a 2.4 GHz dongle for easy and reliable connectivity on the go.
  • •Smaller form factor despite being a full layout.
ModdingKeychron K4 V3
  • •Higher customizability score due to its larger ecosystem of standard MX-style switches and keycaps.
  • •Uses standard MX-style switches, offering a wider range of aftermarket options than Gateron low-profile switches.
  • •Features multiple layers of sound dampening foam (IXPE, EPDM, PET) for advanced acoustic modding.
Content CreationTie
  • •Both offer dedicated multimedia keys for quick control of playback and volume.
  • •Both support independent keymaps for Mac and Windows, which is useful for creators using multiple OS.
  • •The K4 V3's larger battery is better for long editing sessions, while the K5 Max's slim design fits a cleaner desk aesthetic.

Frequently Asked Questions (FAQ)

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