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Compare Keychron K4 V2 vs K5 Pro Differences Side by Side

This comparison is for buyers deciding between a compact 96% keyboard and a sleek full-size low-profile model, both from Keychron. The K4 V2 delivers full functionality in a smaller footprint with a massive 4000mAh battery, making it ideal for limited desk space or long wireless sessions. The K5 Pro offers a thinner profile, QMK/VIA programmability for deep customization, a 100% layout, and PBT keycaps. The decision is hard because both are wireless, hot-swappable, and well-built, but they cater to different priorities regarding size, software control, and typing feel.

70
Keychron K4 Wireless Mechanical Keyboard (UK ISO Layout) - Version 2
88
Keychron K5 Pro QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection

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4.7 (2530)
4.8 (8)
  • Released in 2020
  • Available in a 96% layout
  • Built with the ISO, JIS, ISO-UK, ISO-DE, ANSI, ISO-Nordic, ISO-ES layout standard
  • Equipped with a 4000 mAh battery
  • Features ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Released in 2023
  • Features a low-profile design
  • Available in a 100% layout
  • Built with the ISO, ISO-DE, ISO-Nordic, ISO-UK, JIS, ISO-SW, ISO-FR, ISO-ES, ANSI layout standard
  • Supports QMK firmware
  • Supports VIA configuration
  • Features N-key rollover
  • Equipped with a 2000 mAh battery
  • Weighs about 720 g
  • Sized at 18 x 120 x 435 mm
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face, White, White North-face RGB lighting
Scores
  • Performance: 63.6
  • Build Quality: 69.9
  • Productivity: 67.4
  • Customizability: 70.3
  • Portability: 55.1
Scores
  • Performance: 80.9
  • Build Quality: 79.7
  • Productivity: 79.7
  • Customizability: 88.9
  • Portability: 53.2
Name
Keychron K4 V2
Name
Keychron K5 Pro
Release year
2020
Release year
2023
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
100%
Layout Standard
ISO, JIS, ISO-UK, ISO-DE, ANSI, ISO-Nordic, ISO-ES
Layout Standard
ISO, ISO-DE, ISO-Nordic, ISO-UK, JIS, ISO-SW, ISO-FR, ISO-ES, 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
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
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, North-face, White
Case Colors
Case Colors
Case Material
Aluminum, Plastic, ABS
Case Material
Aluminum, Plastic, ABS
Keycaps Material
ABS
Keycaps Material
ABS, PBT
Dimensions
-
Dimensions
18 x 120 x 435 mm
Weight
-
Weight
720g
*Something incorrect or missing? Please
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Pros and Trade-offs

Ultimately, your choice depends on whether you prioritize deep customization or compact convenience. The K5 Pro is the right choice if you want a slim, fully programmable keyboard with a dedicated number pad and PBT keycaps. The K4 V2 is better if you need maximum battery life and a more space-saving layout without sacrificing essential keys. Both are solid wireless keyboards with hot-swappable switches, but they serve distinctly different user needs.

Keychron K4 V2

  • +Massive 4000mAh battery allows up to 240 hours of use (backlight off) for extended wireless sessions.
  • +96% compact layout saves desk space while retaining a full number pad and arrow keys.
  • +Hot-swappable options compatible with almost all MX style 3-pin and 5-pin switches for easy customization.
  • +Inclined bottom frame described as more comfortable for long typing sessions.
  • −Does not feature QMK or VIA support for advanced key remapping and programming.
  • −Uses ABS keycaps which are less durable and more prone to shine over time compared to PBT.
  • −Bluetooth 5.1 is used, but wireless polling rate is 90 Hz, which may feel less responsive for competitive gaming.

Keychron K5 Pro

  • +Full QMK and VIA support via Keychron Launcher web app for unlimited key remapping and macro creation.
  • +Ultra-slim low-profile design with Gateron low-profile switches that are 31% slimmer than standard switches.
  • +Comes with durable double-shot PBT keycaps that offer excellent oil resistance.
  • +N-Key Rollover (NKRO) support for both wireless and wired modes ensures every key press is registered.
  • −Smaller 2000mAh battery compared to the K4 V2, resulting in shorter wireless runtime.
  • −Hot-swappable option is only compatible with Gateron low-profile mechanical switches, limiting switch choices.
  • −Full-size layout is larger and less portable than the 96% K4 V2.

Which Keyboard Is Better for Your Needs?

The K5 Pro wins the majority of use cases due to its superior programmability and full-size layout. For programming, modding, and content creation, QMK/VIA support is a decisive advantage. The K4 V2 takes the lead for office and travel scenarios where its compact footprint and massive battery life offer more practical benefits. Gaming is a close call, but the K5 Pro's NKRO and specific mention of a gaming-capable polling rate give it a slight edge.

GamingKeychron K5 Pro
  • •K5 Pro features a wired 1000 Hz polling rate right out of the box, which is mentioned alongside competitive gaming.
  • •The K5 Pro has N-Key Rollover (NKRO) support for both wireless and wired modes for reliable key registration.
  • •Low-profile switches can offer faster key travel for rapid inputs, though this is based on general design, not a stated spec.
OfficeKeychron K4 V2
  • •K4 V2 has a 96% layout that includes a number pad but saves desk space compared to a full-size board.
  • •K4 V2 features a 4000mAh battery which provides up to 240 hours of typing time (backlight off) reducing need for frequent charging.
  • •The inclined bottom frame of the K4 V2 is specifically noted for comfortable extended typing sessions.
ProgrammingKeychron K5 Pro
  • •K5 Pro offers QMK firmware and VIA support via the Keychron Launcher web app for creating complex macros and key remaps.
  • •The K5 Pro is mentioned as particularly good for software engineers in user reviews due to its customizable features.
  • •Full 100% layout provides dedicated function row and navigation keys without needing to use layers for standard programming shortcuts.
TravelKeychron K4 V2
  • •The K4 V2 has a more compact 96% layout than the full-size K5 Pro, making it easier to fit into a bag.
  • •K4 V2's significantly larger 4000mAh battery provides much longer wireless use between charges on the go.
  • •The K4 V2 is lighter and smaller overall, as implied by the 96% layout compared to the K5 Pro's full-size dimensions.
ModdingKeychron K5 Pro
  • •K5 Pro features open-source QMK firmware allowing for deep firmware-level customization and keymap configuration.
  • •The K5 Pro uses low-profile Gateron mechanical switches that are hot-swappable, enabling switch modification without soldering.
  • •K5 Pro comes with double-shot PBT keycaps which are more durable for repeated handling during modding.
Content CreationKeychron K5 Pro
  • •K5 Pro's QMK/VIA programmability allows mapping of complex editing macros and shortcuts directly to keys.
  • •The K5 Pro offers a full 100% layout with a number pad for efficient data entry and timeline scrubbing.
  • •Low-profile design reduces wrist strain during long editing sessions, and the adjustable typing angle provides ergonomic support.

Frequently Asked Questions (FAQ)

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