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Compare Keychron K3 Max SE vs K4 Max Differences Side by Side

This comparison is for buyers torn between the ultra-slim portability of the Keychron K3 Max SE and the full-size capability of the Keychron K4 Max. The K3 Max SE offers a 75% low-profile layout with a wooden frame and weighs just 566g, making it a top travel companion. The K4 Max counters with a 96% layout that includes a numpad, a larger 4000mAh battery, and a steel plate for added stability. The choice ultimately comes down to whether you prioritize desk space and portability or a complete key set and longer wireless runtime.

83
Keychron K3 Max SE QMK Wireless Custom Mechanical Keyboard
87
Keychron K4 Max QMK Wireless Mechanical Keyboard ISO Layout Collection

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0.0 (0)
5.0 (1)
  • Released in 2026
  • Features a low-profile design
  • Available in a 75% layout
  • Built with the ANSI layout standard
  • Connects via USB-C
  • Equipped with a 1550 mAh battery
  • Weighs about 566 g
  • Sized at 20 x 319 x 126 mm
  • Made with a ABS, Wood case
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Released in 2025
  • Available in a 96% layout
  • Built with the ISO, ANSI layout standard
  • Provides dedicated media keys
  • Includes screw-in stabilizers
  • Uses a PCB Mount mounting style
  • Equipped with a 4000 mAh battery
  • 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
Scores
  • Performance: 80.4
  • Build Quality: 73.9
  • Productivity: 88.7
  • Customizability: 86.9
  • Portability: 80
Scores
  • Performance: 82
  • Build Quality: 80.3
  • Productivity: 89.4
  • Customizability: 93
  • Portability: 50.8
Name
Keychron K3 Max SE
Name
Keychron K4 Max
Release year
2026
Release year
2025
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Low Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
96%
Layout Standard
ANSI
Layout Standard
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
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
-
Mount Style
PCB Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, South-face, White, White South-face
Case Colors
Case Colors
Case Material
ABS, Wood
Case Material
ABS
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
20 x 319 x 126 mm
Dimensions
31 x 391 x 140 mm
Weight
566g
Weight
1290g
*Something incorrect or missing? Please
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Pros and Trade-offs

Choose the Keychron K3 Max SE if portability and a low-profile, wooden aesthetic are your top priorities for on-the-go typing. Opt for the Keychron K4 Max if you need a full numpad, longer battery life, and a heavier, more stable platform for extensive data entry or modding. The K4 Max offers more features for a stationary desk setup, while the K3 Max SE excels in travel and minimalist environments.

Keychron K3 Max SE

  • +Ultra-slim low-profile design with a wooden side frame for a unique look.
  • +Lightweight at 566g, making it one of the most portable wireless mechanical keyboards.
  • +Includes EPDM acoustic foam and bottom case foam for a quieter typing experience.
  • +Features LSA double-shot PBT keycaps with excellent oil resistance.
  • +Offers north-facing RGB with per-key and mix RGB customization options.
  • −75% layout lacks a dedicated numpad, limiting data entry speed.
  • −Small 1550mAh battery requires more frequent charging compared to larger keyboards.
  • −Low-profile switches restrict aftermarket switch choices compared to full-height options.

Keychron K4 Max

  • +96% layout includes a full numpad for efficient number input.
  • +Large 4000mAh battery provides extended wireless usage.
  • +Screw-in stabilizers with reinforced sidewalls improve large key stability.
  • +Steel plate and multiple foam layers (IXPE, EPDM) deliver a solid, dampened typing feel.
  • +South-facing RGB LEDs are compatible with Cherry-profile keycaps and provide consistent lighting.
  • −Heavy at 1290g, which is cumbersome for travel or frequent relocation.
  • −Only a single 3-degree typing angle is stated by the manufacturer; adjustable feet are not mentioned in specs.
  • −Full 96% layout takes up more desk space than compact alternatives.

Which Keyboard Is Better for Your Needs?

For travel, the K3 Max SE's light weight and slim profile make it the clear choice. In office and content creation scenarios, the K4 Max's numpad and larger battery give it an advantage for data entry and extended use. Both keyboards tie in gaming and programming due to shared features like QMK/VIA support and a 1000 Hz polling rate. Modders will prefer the K4 Max's screw-in stabilizers and broader switch compatibility, while the K3 Max SE appeals to those prioritizing a ultra-portable setup.

GamingTie
  • •Both support a 1000 Hz polling rate over 2.4 GHz and wired connections for low latency.
  • •Both offer hot-swappable switches to customize feel for gaming.
  • •The K3 Max SE's low-profile design may appeal to gamers who prefer a lighter, faster keystroke.
  • •The K4 Max's steel plate provides a more stable, heavier platform for aggressive play.
OfficeKeychron K4 Max
  • •The K4 Max's 96% layout includes a dedicated numpad, speeding up data entry tasks.
  • •The K4 Max offers a 4000mAh battery, reducing charging frequency during workdays.
  • •The K4 Max provides three adjustable typing angles (3 degrees, 7 degrees, 10 degrees) for ergonomic comfort.
  • •The K4 Max's stabilizers feature reinforced sidewalls for reliable larger keys.
ProgrammingTie
  • •Both keyboards support QMK and VIA for full key remapping and macro creation via the Keychron Launcher web app.
  • •Both offer PBT keycaps known for durability and oil resistance for long coding sessions.
  • •Programmers who prefer a numpad may lean toward the K4 Max, while those wanting a compact desk setup may prefer the K3 Max SE.
TravelKeychron K3 Max SE
  • •The K3 Max SE weighs only 566g, making it significantly lighter than the 1290g K4 Max.
  • •Its 75% low-profile design is more compact, fitting easily into bags.
  • •The K3 Max SE includes a wooden side frame for a unique aesthetic while remaining portable.
  • •The K3 Max SE's slim profile (16.46mm front height) allows for comfortable typing on the go.
ModdingKeychron K4 Max
  • •The K4 Max uses a PCB mount design and steel plate, providing a solid base for modifications.
  • •The K4 Max features screw-in stabilizers, which are preferred by modders for their stability.
  • •The K4 Max includes multiple foam layers (IXPE, EPDM) for sound tuning out of the box.
  • •The K4 Max supports 3-pin and 5-pin MX-style switches, offering broader switch compatibility.
Content CreationKeychron K4 Max
  • •The K4 Max's 96% layout includes a numpad, useful for entering numerical data or timelines.
  • •The K4 Max's 4000mAh battery supports longer wireless sessions without interruption.
  • •The K4 Max's south-facing RGB LEDs are designed to better illuminate keycaps from the user's angle without interference from Cherry-profile keycaps.

Frequently Asked Questions (FAQ)

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