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Compare Keychron K2 Pro vs K3 QMK V3 Differences Side by Side

This comparison is for buyers deciding between a standard-profile 75% keyboard and an ultra-slim low-profile 75% model, both from Keychron. The decision is difficult because both offer QMK firmware, wireless connectivity, and hot-swappable switches, but differ significantly in height, weight, materials, and included features. The K2 Pro has a steel plate, sound dampening, and screw-in stabilizers, while the K3 QMK V3 uses an aluminum plate, advanced acoustic foams, and redesigned stabilizers. Your choice will depend on whether you prioritize a traditional typing feel or a portable, slim design.

94
Keychron K2 Pro QMK/VIA Wireless Mechanical Keyboard
77
Keychron K3 QMK Kabellose Mechanische Tastatur (ISO Layout) - Version 3

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4.9 (16)
0.0 (0)
  • Released in 2022
  • Has Linear, Tactile, Clicky switch options
  • Built with the ISO, JIS, ANSI, ISO-DE, ISO-ES, ISO-FR, ISO-SW, ISO-UK layout standard
  • Supports VIA configuration
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Uses a Tray Mount mounting style
  • Equipped with a 4000 mAh battery
  • Weighs about 1070 g
  • Sized at 25 x 317 x 122 mm
  • Made with a Aluminum, Plastic, ABS case
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, White South-face RGB lighting
  • Released in 2024
  • Has Tactile, Linear switch options
  • Features a low-profile design
  • Built with the ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI layout standard
  • Utilizes Hall effect sensors
  • Uses a Plate Mount mounting style
  • Equipped with a 1550 mAh battery
  • Weighs about 540 g
  • Sized at 19 x 306 x 116 mm
  • Made with a ABS, Aluminum case
  • Features ABS keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Scores
  • Performance: 81.7
  • Build Quality: 89.6
  • Productivity: 94.9
  • Customizability: 97.5
  • Portability: 79.7
Scores
  • Performance: 84.8
  • Build Quality: 71.3
  • Productivity: 73.9
  • Customizability: 79.1
  • Portability: 77.4
Name
Keychron K2 Pro
Name
Keychron K3 QMK V3
Release year
2022
Release year
2024
Switch Options
Linear, Tactile, Clicky
Switch Options
Tactile, Linear
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ISO, JIS, ANSI, ISO-DE, ISO-ES, ISO-FR, ISO-SW, ISO-UK
Layout Standard
ISO, ISO-DE, ISO-Nordic, ISO-UK, 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
1550 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
Plate Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face, White, White South-face
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Material
Aluminum, Plastic, ABS
Case Material
ABS, Aluminum
Keycaps Material
ABS, PBT
Keycaps Material
ABS
Dimensions
25 x 317 x 122 mm
Dimensions
19 x 306 x 116 mm
Weight
1070g
Weight
540g
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Pros and Trade-offs

For most users, the Keychron K2 Pro is the better all-rounder with its superior build, larger battery, and VIA support at a similar price tier. Opt for the K3 QMK V3 only if you must have an ultra-slim and lightweight keyboard for travel or prefer the low-profile typing experience. Both are solid choices, but the K2 Pro delivers more value for daily desk use.

Keychron K2 Pro

  • +Large 4000mAh battery provides longer wireless usage between charges.
  • +Sound-absorbing foam and silicone dampening pad (on most versions) for a quieter typing experience.
  • +Screw-in PCB stabilizers reduce wobble on large keys and support third-party replacements.
  • +Available with a wide range of layout options including JIS and multiple ISO standards.
  • −Heavier at 1070g, making it less portable than low-profile alternatives.
  • −Thicker body at 25mm front height may not fit in slim carrying cases.
  • −Some versions (Black Fully Assembled) lack hot-swap sockets and sound dampening.

Keychron K3 QMK V3

  • +Ultra-slim design at 19mm front height, one of the thinnest wireless mechanical keyboards.
  • +Lightweight at 540g, easy to carry in a bag or backpack.
  • +Advanced acoustic foam layers (IXPE, EPDM, latex) for a refined typing sound.
  • −Smaller 1550mAh battery requires more frequent charging compared to the K2 Pro.
  • −Limited to low-profile Keychron/Gateron switches only, reducing switch options.
  • −North-facing RGB LEDs may interfere with some Cherry-profile keycap sets.

Which Keyboard Is Better for Your Needs?

The Keychron K2 Pro wins in five out of six categories, particularly excelling in office, programming, modding, and content creation due to its higher productivity and customizability scores, larger battery, and VIA support. The K3 QMK V3 takes the gaming category thanks to its specified wired gaming performance, but its main strength is travel where its low weight and slim profile are unmatched. For users who prioritize a traditional typing experience and feature set, the K2 Pro is the clear choice, while the K3 QMK V3 is only recommended for those who need a highly portable low-profile keyboard.

GamingKeychron K3 QMK V3
  • •The K3 QMK V3 has a higher performance score relative to its price tier for gaming.
  • •The K3 QMK V3 offers a 1000 Hz polling rate in wired mode, which is competitive for gaming.
  • •The K3 QMK V3 lists a specific wired polling rate of 1000 Hz and a wireless rate of 90 Hz, while the K2 Pro only states 1000 Hz without clarifying wireless vs wired.
OfficeKeychron K2 Pro
  • •The K2 Pro has a much higher productivity score (94.9) compared to the K3 QMK V3 (73.9).
  • •The K2 Pro includes sound-absorbing foam and a thick silicone dampening bottom pad, which may reduce noise in an office.
  • •The K2 Pro offers a larger 4000mAh battery, reducing the need for frequent charging during workdays.
ProgrammingKeychron K2 Pro
  • •The K2 Pro supports VIA natively in addition to QMK, which may provide a more familiar key mapping experience for some users.
  • •The K2 Pro has a premium build with a steel plate and screw-in PCB stabilizers, which can provide a more stable typing feel.
  • •The K2 Pro comes with a wider range of layout options including JIS and ANSI, which may suit more users.
TravelKeychron K3 QMK V3
  • •The K3 QMK V3 is significantly lighter at 540g compared to the K2 Pro's 1070g.
  • •The K3 QMK V3 is much thinner at 19mm front height versus the K2 Pro's 25mm, making it easier to pack.
  • •The K3 QMK V3 still offers a 1550mAh battery, which provides decent wireless runtime for travel.
ModdingKeychron K2 Pro
  • •The K2 Pro has a higher customizability score (97.5) compared to the K3 QMK V3 (79.2).
  • •The K2 Pro supports third-party screw-in PCB stabilizers, offering more modding options.
  • •The K2 Pro is available as a barebones kit, allowing full customization from the start.
Content CreationKeychron K2 Pro
  • •The K2 Pro offers a wider range of switch types (Linear, Tactile, Clicky) which may suit various creative workflows.
  • •The K2 Pro has sound dampening that can reduce background noise during recording.
  • •The K2 Pro includes dedicated multi-media keys, which are useful for editing tasks.

Frequently Asked Questions (FAQ)

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