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Compare Keychron K3 vs K4 HE Differences Side by Side

This comparison is for buyers deciding between Keychron's ultra-portable offering and their high-performance flagship. The K3 is a slim, low-profile 75% keyboard focused on wireless convenience and a compact footprint. The K4 HE is a 96% layout keyboard packed with advanced magnetic switch technology and gaming-centric software features. The decision hinges on whether you prioritize a thin, lightweight form factor or demand the latest in adjustable actuation and rapid trigger performance.

65
Keychron K3 Ultra-slim Wireless Mechanical Keyboard FR-ISO Layout
92
Keychron K4 HE Wireless Magnetic Switch Custom Keyboard ISO Layout Collection

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0.0 (0)
4.3 (13)
  • Released in 2023
  • Has Tactile, Linear, Clicky switch options
  • Features a low-profile design
  • Available in a 75% layout
  • Built with the ISO-FR, ISO, ANSI layout standard
  • Provides dedicated media keys
  • Uses a Plate Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 1550 mAh battery
  • Made with a Aluminum, ABS case
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face RGB lighting
  • Released in 2025
  • Has Magnetic, Linear, Tactile, Clicky switch options
  • Available in a 96% layout
  • Built with the ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ISO-SW, ISO-Nordic, ANSI layout standard
  • Utilizes Hall effect sensors
  • Supports QMK firmware
  • Supports VIA configuration
  • Features N-key rollover
  • Enables rapid trigger functionality
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Runs at a 1000 Hz polling rate
  • Equipped with a 4000 mAh battery
  • Weighs about 1090 g
  • Sized at 41 x 377 x 126 mm
  • Made with a Plastic, Aluminum, Wood, ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Scores
  • Performance: 62.8
  • Build Quality: 61.7
  • Productivity: 66.7
  • Customizability: 69.5
  • Portability: 78.2
Scores
  • Performance: 92.4
  • Build Quality: 87.2
  • Productivity: 94.2
  • Customizability: 89.8
  • Portability: 56.3
Name
Keychron K3
Name
Keychron K4 HE
Release year
2023
Release year
2025
Switch Options
Tactile, Linear, Clicky
Switch Options
Magnetic, Linear, Tactile, Clicky
Profile
Low Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
96%
Layout Standard
ISO-FR, ISO, ANSI
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ISO-SW, ISO-Nordic, 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, Wired, Wireless, 2.4 GHz
Polling Rate
-
Polling Rate
1000 Hz
Battery capacity
1550 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
Plate Mount
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Material
Aluminum, ABS
Case Material
Plastic, Aluminum, Wood, ABS
Keycaps Material
PBT, ABS
Keycaps Material
PBT
Dimensions
-
Dimensions
41 x 377 x 126 mm
Weight
-
Weight
1090g
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Pros and Trade-offs

Your primary need dictates the choice. If your priority is a sleek, portable keyboard for use on the go or in tight spaces, the Keychron K3's low-profile design is compelling. If you want a desktop powerhouse for gaming, productivity, and deep customization with the latest magnetic switch technology, the Keychron K4 HE justifies its higher cost with superior features and performance.

Keychron K3

  • +Ultra-slim, low-profile design for a compact and portable form factor.
  • +Hot-swappable low-profile optical switches for easy customization.
  • +Includes 17 extra keycaps for macOS/Windows layout switching.
  • +Two-level adjustable rubber feet for ergonomic flexibility.
  • +Connects via Bluetooth 5.1 for wireless use with multiple devices.
  • −Limited to low-profile Keychron optical switches, not compatible with standard MX-style switches.
  • −Smaller 1550mAh battery compared to the K4 HE.
  • −Uses a plastic plate, which may feel less rigid than metal alternatives.

Keychron K4 HE

  • +Features advanced Gateron double-rail magnetic switches with adjustable actuation points (0.2-3.8mm).
  • +Includes gaming features like Rapid Trigger, Dynamic Keystrokes, and a 1000 Hz polling rate.
  • +Extensive sound dampening with EVA foam, EPDM foam, and a silicone acoustic pad.
  • +Large 4000mAh battery for extended wireless use.
  • +Supports QMK and VIA firmware for deep customization.
  • −Larger and heavier 96% layout is less portable.
  • −Magnetic switches are only compatible with specific Gateron double-rail models.
  • −Higher price point compared to the K3.

Which Keyboard Is Better for Your Needs?

The K4 HE is the clear choice for gaming, office work, and content creation due to its full layout, advanced magnetic switches, and extensive battery life. The K3 wins decisively for travel thanks to its ultra-slim, low-profile form factor. For programming and general modding, the K4 HE's superior software support gives it an edge, though the K3's compact layout remains a viable space-saving option.

GamingKeychron K4 HE
  • •The K4 HE has a specified 1000 Hz polling rate in wired and 2.4 GHz modes.
  • •It features magnetic switches with adjustable actuation points (0.2-3.8mm) and Rapid Trigger functionality.
  • •It includes gaming-focused features like Last Key Priority (LKP) and Dynamic Keystrokes for multiple actions per key.
OfficeKeychron K4 HE
  • •The K4 HE's 96% layout includes a numeric keypad, which is often essential for data entry.
  • •It has a significantly larger 4000mAh battery, with the manufacturer claiming up to 110 hours of wireless use.
  • •It offers extensive sound dampening with EVA foam, EPDM foam, and a silicone acoustic pad for a quieter environment.
ProgrammingTie
  • •The K4 HE offers deeper software customization via QMK and VIA support.
  • •The K3's 75% layout saves desk space while retaining arrow and function keys.
  • •Both are hot-swappable and support macOS and Windows layouts out of the box.
TravelKeychron K3
  • •The K3 is an ultra-slim, low-profile design described as one of the thinnest wireless mechanical keyboards.
  • •Its 75% layout is more compact than the K4 HE's 96% layout.
  • •It has a lower 6° typing angle compared to the K4 HE's options, contributing to a slimmer profile.
ModdingKeychron K4 HE
  • •The K4 HE supports QMK and VIA firmware for extensive key remapping and macro programming.
  • •It features an aluminum plate and screw-in stabilizers, according to its listing.
  • •It has multiple internal foam layers (EVA, EPDM, silicone pad) for acoustic customization.
Content CreationKeychron K4 HE
  • •The K4 HE's 96% layout includes dedicated navigation and numpad keys for efficient shortcut use and numerical input.
  • •Its programmable layers and macros via QMK/VIA are beneficial for complex editing workflows.
  • •The larger battery supports long, uninterrupted wireless sessions.

Frequently Asked Questions (FAQ)

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