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Compare Keychron K4 Max vs K5 Max Differences Side by Side

This comparison is for buyers deciding between Keychron's two high-end wireless Max series keyboards. The choice is difficult because both share premium features like QMK/VIA support, triple-mode connectivity, and hot-swappable switches. The core decision hinges on whether you prioritize a space-saving 96% layout with a massive battery and standard keycap compatibility, or a sleek, low-profile full-size keyboard with a thinner aluminum frame.

87
Keychron K4 Max QMK Wireless Mechanical Keyboard ISO Layout Collection
86
Keychron K5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection

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5.0 (1)
3.9 (22)
  • Released in 2025
  • Has Linear, Tactile, Clicky switch options
  • Available in a 96% layout
  • Built with the ISO, ANSI layout standard
  • Includes screw-in stabilizers
  • Equipped with a 4000 mAh battery
  • Weighs about 1290 g
  • Sized at 31 x 391 x 140 mm
  • Made with a ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, White South-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
  • Connects via USB-C
  • 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: 82.1
  • Build Quality: 80.3
  • Productivity: 89.2
  • Customizability: 92.9
  • Portability: 50.9
Scores
  • Performance: 82.4
  • Build Quality: 81.8
  • Productivity: 89.4
  • Customizability: 90.1
  • Portability: 54.8
Name
Keychron K4 Max
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, 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, 2.4 GHz, 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
PCB Mount
Mount Style
PCB Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face, White, White South-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
ABS
Case Material
ABS, Aluminum
Keycaps Material
PBT
Keycaps Material
PBT, ABS
Dimensions
31 x 391 x 140 mm
Dimensions
18 x 424 x 119 mm
Weight
1290g
Weight
720g
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Pros and Trade-offs

Your primary need dictates the choice. If you want a compact workstation with maximum battery life and the freedom to mod with any standard switch, the Keychron K4 Max is the logical pick. If your priority is a sleek, modern aesthetic with a low-profile typing feel and a full numpad, and you accept its narrower switch ecosystem, the Keychron K5 Max is the better fit. Both deliver excellent wireless performance and deep software customization.

Keychron K4 Max

  • +Larger 4000mAh battery for extended wireless use.
  • +96% layout saves desk space while retaining a numpad.
  • +Compatible with a wide range of standard MX-style switches for hot-swapping.
  • +South-facing RGB LEDs prevent interference with Cherry-profile keycaps.
  • +Includes multiple acoustic foam layers (IXPE, PET, EPDM) for sound dampening.
  • −Heavier and bulkier (1290g) than the K5 Max.
  • −Taller profile may require a wrist rest for some users.
  • −Case is made of ABS, not aluminum.

Keychron K5 Max

  • +Ultra-slim low-profile design with an 18mm height and aluminum frame option.
  • +Lighter weight (720g) improves portability.
  • +Full 100% layout includes a dedicated numpad.
  • +Includes low-profile double-shot PBT keycaps in an LSA profile.
  • +Offers a low-profile typing experience with Gateron switches.
  • −Smaller 2000mAh battery capacity.
  • −Hot-swap compatibility is restricted to specific low-profile mechanical switches.
  • −North-facing RGB may cause interference with some keycap profiles.
  • −Some user reviews note the keycaps are not shine-through, limiting backlight visibility.

Which Keyboard Is Better for Your Needs?

The K5 Max takes the lead for office use and travel due to its low-profile ergonomics and lighter build. The K4 Max is the stronger choice for programming and modding, thanks to its compact layout and broader switch compatibility. For gaming and content creation, the keyboards are evenly matched on core performance features, leaving the decision to layout and typing feel preference.

GamingTie
  • •Both offer a 1000 Hz polling rate in 2.4 GHz and wired modes for low latency.
  • •Both feature N-key rollover for simultaneous key presses.
  • •The K4 Max's south-facing RGB avoids interference with Cherry-profile keycaps, while the K5 Max's north-facing RGB may have compatibility trade-offs.
OfficeKeychron K5 Max
  • •The K5 Max's low-profile design and lighter weight (720g) may be more comfortable for all-day typing.
  • •Its 100% layout includes a dedicated numpad for data entry.
  • •The vendor page mentions it is quiet enough for office use, and it includes acoustic foam.
ProgrammingKeychron K4 Max
  • •The K4 Max's 96% layout provides arrow and navigation keys in a more compact footprint than the K5 Max.
  • •Its south-facing RGB design allows for wider Cherry-profile keycap compatibility, which is popular in custom sets.
  • •It includes multiple layers of acoustic foam (IXPE, PET, EPDM) for a potentially more satisfying typing sound.
TravelKeychron K5 Max
  • •The K5 Max is significantly lighter (720g vs 1290g) and thinner (18mm height).
  • •Its lower profile may fit more easily in a bag or laptop sleeve.
  • •While the battery is smaller (2000mAh vs 4000mAh), the lighter weight is a key portability factor.
ModdingKeychron K4 Max
  • •The K4 Max's hot-swappable PCB accepts almost all 3-pin and 5-pin MX-style switches, offering vast third-party options.
  • •Its south-facing RGB and steel plate provide a standard foundation for aftermarket keycaps and mods.
  • •The K5 Max's hot-swap compatibility is limited to Gateron and Keychron low-profile mechanical switches only.
Content CreationTie
  • •Both support extensive macro programming and key remapping via QMK and the Keychron Launcher web app.
  • •Both include multimedia keys for quick media control.
  • •The K4 Max offers a compact layout to save desk space for graphics tablets, while the K5 Max's full layout provides dedicated keys for shortcuts.

Frequently Asked Questions (FAQ)

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