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Compare Keychron K15 Pro vs K3 Pro Differences Side by Side

This comparison helps buyers decide between two low-profile 75% wireless mechanical keyboards from Keychron, the K15 Pro with an Alice layout and the K3 Pro with a standard layout. Both support QMK and VIA, offer hot-swappable switches, and include Bluetooth connectivity. The decision is hard because each serves a different ergonomic preference, and they have contrasting feature sets like the K15 Pro's rotary encoder knob versus the K3 Pro's broader layout support. Whether you prioritize typing comfort or layout flexibility will determine the right pick.

91
Keychron K15 Pro (Alice Layout) QMK/VIA Wireless Custom Mechanical Keyboard
87
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection

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4.8 (12)
4.7 (52)
  • Released in 2023
  • Built with the ANSI layout standard
  • Offers Alice ergonomics
  • Comes with a knob
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 2000 mAh battery
  • Weighs about 696 g
  • Sized at 12 x 370 x 143 mm
  • Features PBT keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Released in 2022
  • Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI layout standard
  • Offers Normal ergonomics
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Equipped with a 1550 mAh battery
  • Weighs about 930 g
  • Sized at 15 x 306 x 116 mm
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 83.9
  • Build Quality: 81.7
  • Productivity: 91.5
  • Customizability: 93
  • Portability: 81.4
Scores
  • Performance: 80.9
  • Build Quality: 81.1
  • Productivity: 79.5
  • Customizability: 88.8
  • Portability: 77.1
Name
Keychron K15 Pro
Name
Keychron K3 Pro
Release year
2023
Release year
2022
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI
Layout Ergonomics
Alice
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
1000 Hz
Polling Rate
1000 Hz
Battery capacity
2000 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
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, South-face, White, North-face
Case Colors
Case Colors
Case Material
Aluminum, Plastic, ABS
Case Material
Aluminum, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
ABS, PBT
Dimensions
12 x 370 x 143 mm
Dimensions
15 x 306 x 116 mm
Weight
696g
Weight
930g
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Pros and Trade-offs

For most users, the Keychron K15 Pro is the stronger choice due to its ergonomic Alice layout, extra macro keys, and programmable knob that boost productivity and comfort. Pick the Keychron K3 Pro if you need a specific ISO layout or prefer a standard key arrangement that is easier to adapt to. Both are well-built low-profile mechanical keyboards with QMK and VIA support, so your decision ultimately comes down to layout preference versus ergonomic features.

Keychron K15 Pro

  • +Ergonomic Alice layout designed to reduce wrist strain.
  • +Includes a programmable aluminum rotary encoder knob.
  • +Extra macro keys beyond standard 75% layout for productivity.
  • +Larger 2000mAh battery compared to the K3 Pro's 1550mAh.
  • −Alice layout may take time to adjust to for users unaccustomed to split designs.
  • −Limited to ANSI layout only; no ISO variants are available.
  • −Keycaps are non-shine-through PBT, which may reduce backlight visibility.
  • −Compatible only with Gateron and Keychron low-profile mechanical switches.

Keychron K3 Pro

  • +Available in multiple ISO layouts (UK, German, Nordic, French, Spanish) plus ANSI.
  • +Choice between shine-through ABS keycaps or double-shot PBT keycaps.
  • +Uses pre-lubed Gateron low-profile switches for a smooth feel.
  • +South-facing RGB LEDs reduce interference with Cherry-profile keycaps.
  • −No rotary encoder knob included.
  • −Smaller 1550mAh battery compared to the K15 Pro's 2000mAh.
  • −Standard layout lacks the ergonomic wrist positioning of an Alice design.
  • −Plastic case construction may feel less premium than the K15 Pro's aluminum frame.

Which Keyboard Is Better for Your Needs?

The Keychron K15 Pro takes the lead in most productivity-focused categories thanks to its ergonomic Alice layout, extra macro keys, and a programmable knob. The K3 Pro wins only in travel, where its standard layout offers simpler packing and familiarity. In modding, the two tie, as both offer hot-swap sockets and QMK/VIA support, though their low-profile nature limits some customization. Overall, the K15 Pro is better suited for users who value comfort and workflow efficiency, while the K3 Pro appeals to those who need layout flexibility and a more traditional typing experience.

GamingKeychron K15 Pro
  • •The K15 Pro includes a knob that can be programmed for gaming macros or volume control.
  • •The K15 Pro has additional macro keys beyond the standard 75% layout.
  • •Both have 1000 Hz wired polling rate, so latency is similar, but the K15 Pro offers more programmable inputs.
OfficeKeychron K15 Pro
  • •The K15 Pro Alice layout is designed for ergonomic comfort, reducing wrist strain during long typing sessions.
  • •The K15 Pro includes a rotary encoder knob for quick volume or productivity adjustments.
  • •The K15 Pro has extra macro keys that can speed up repetitive office tasks.
ProgrammingKeychron K15 Pro
  • •The K15 Pro Alice layout encourages a more natural hand position, which can reduce fatigue during extended coding sessions.
  • •The K15 Pro includes a knob and macro keys for custom shortcuts without needing layers.
  • •Both support QMK and VIA, but the K15 Pro's ergonomic layout is a stronger differentiator for programmers who type all day.
TravelKeychron K3 Pro
  • •The K3 Pro is wider but has a similar 75% footprint, and at 930g it is heavier, but it lacks an external knob that could be snagged.
  • •The K3 Pro has a simpler standard layout that may feel more familiar and easier to adapt to on the go.
  • •The K3 Pro's conventional shape may fit into more standard carrying cases or bags without the Alice curve.
ModdingTie
  • •Both keyboards are hot-swappable and support QMK and VIA for custom firmware and key mapping.
  • •Both use low-profile Gateron switches and are compatible with low-profile keycaps, limiting some modding options compared to full-profile boards.
  • •The K15 Pro offers a knob and extra macro keys for hardware modding, while the K3 Pro has a wider variety of stock layout options (ANSI and multiple ISO layouts).
Content CreationKeychron K15 Pro
  • •The K15 Pro's rotary encoder knob can be programmed for tasks like timeline scrolling or brush size adjustment.
  • •Additional macro keys on the K15 Pro allow for one-touch shortcuts in creative software.
  • •The Alice layout provides ergonomic support during long editing sessions.

Frequently Asked Questions (FAQ)

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