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Compare Keychron B1 Pro vs B31 Differences Side by Side

This comparison is for buyers deciding between two of Keychron's budget-friendly 75% wireless keyboards. The choice is difficult because both share core features like tri-mode connectivity and web-based customization, but diverge in their fundamental typing experience. The B1 Pro offers an ultra-slim, low-profile form factor, while the B31 uses a taller scissor switch mechanism designed for silent typing. Your preference for keyboard height, key feel, and ergonomic adjustability will be the deciding factors.

Keychron B1 Pro Ultra-Slim Wireless Keyboard ISO Layout Collection
Keychron B31 Wireless Keyboard

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4.2 (15)
0.0 (0)
  • Released in 2024
  • Features a low-profile design
  • Built with the ANSI, ISO, JIS layout standard
  • Weighs about 425 g
  • Sized at 5 x 296 x 130 mm
  • Made with a Plastic, ABS case
  • Released in 2026
  • Built with the ANSI layout standard
  • Features N-key rollover
  • Weighs about 520 g
  • Sized at 26 x 138 x 327 mm
  • Made with a ABS, Plastic case
Scores
  • Performance: 48.1
  • Build Quality: 41.6
  • Productivity: 66.1
  • Customizability: 45
  • Portability: 77.9
Scores
  • Performance: 57.1
  • Build Quality: 41.9
  • Productivity: 66.7
  • Customizability: 45.5
  • Portability: 78.1
Name
Keychron B1 Pro
Name
Keychron B31
Release year
2024
Release year
2026
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
75%
Layout Standard
ANSI, ISO, JIS
Layout Standard
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
800 mAh
Battery capacity
800 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
-
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
Case Colors
Case Colors
Case Material
Plastic, ABS
Case Material
ABS, Plastic
Keycaps Material
ABS
Keycaps Material
ABS
Dimensions
5 x 296 x 130 mm
Dimensions
26 x 138 x 327 mm
Weight
425g
Weight
520g
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Pros and Trade-offs

Your choice hinges on the desired typing experience and form factor. Opt for the Keychron B1 Pro if you prioritize a sleek, low-profile keyboard for travel or need a specific ISO layout. Choose the Keychron B31 if you want a quieter, more traditional typing feel with adjustable angles for all-day office or home use. Both deliver reliable tri-mode wireless connectivity at a similar price point.

Keychron B1 Pro

  • +Ultra-slim 5mm low-profile design for portability and a modern look.
  • +Wide selection of ISO layouts available (German, UK, Nordic, etc.).
  • +Includes a protective, washable silicone skin according to the vendor description.
  • +Lighter weight (425g) for easier transport.
  • +Specific emoji shortcut (Fn + Shift) for quick access.
  • −Fixed, low 3° typing angle with less ergonomic adjustability.
  • −Low-profile keycaps and switches may not be preferred by all typists.
  • −Lacks the explicitly stated silent typing feature of the B31.

Keychron B31

  • +Scissor switch mechanism designed for silent, quiet typing, ideal for shared environments.
  • +Adjustable typing angles (6.5° and 9°) for better ergonomic support.
  • +Pre-lubed keys for a smooth and consistent typing feel, as per the manufacturer.
  • +Includes a magnetic storage slot on the keyboard for the 2.4 GHz receiver.
  • +Heavier build (520g) may feel more stable on a desk.
  • −Taller profile and heavier weight reduce portability compared to the B1 Pro.
  • −Keycaps are explicitly noted as not replaceable, limiting customization.
  • −Only available in ANSI layout, lacking the ISO options of the B1 Pro.

Which Keyboard Is Better for Your Needs?

The B31 takes the lead for office use due to its silent, pre-lubed scissor switches and adjustable angles. The B1 Pro is the better travel companion thanks to its ultra-slim, lightweight design and wins for programming where specific ISO layouts are needed. For gaming, content creation, and modding, the keyboards are closely matched, sharing core wireless performance and customization features while differing in physical form.

GamingTie
  • •Both offer a 1000 Hz polling rate over their 2.4 GHz wireless connection for responsive gameplay.
  • •Both support N-key rollover, as listed in the B31's specs and implied by the B1 Pro's gaming features.
  • •Their similar wireless performance and compact 75% layouts make them equally viable for saving desk space.
OfficeKeychron B31
  • •The B31 is explicitly marketed for silent typing with pre-lubed keys and a scissor mechanism, ideal for shared spaces.
  • •It offers adjustable typing angles of 6.5° and 9°, providing more ergonomic support than the B1 Pro's fixed 3° angle.
  • •Both have tri-mode connectivity for switching between office devices, but the B31's quiet focus is a key office advantage.
ProgrammingKeychron B1 Pro
  • •The B1 Pro offers extensive ISO layout support (German, UK, Nordic, etc.), which is crucial for programmers in those regions.
  • •Its low-profile design may reduce finger travel and strain during long coding sessions for some users.
  • •Both keyboards are programmable via the Keychron Launcher web app for creating macros and shortcuts.
TravelKeychron B1 Pro
  • •The B1 Pro is significantly thinner at 5mm and lighter at 425g, making it more portable.
  • •Keychron describes it as 'ultra-portable' and 'lightweight', with an integrated body suited for mobility.
  • •While both have similar battery capacities, the B1 Pro's slimmer profile is easier to pack.
ModdingTie
  • •Neither keyboard is hot-swappable, limiting switch replacement.
  • •Both offer firmware customization through the Keychron Launcher web app for key remapping and macros.
  • •The B31's vendor page explicitly states its keycaps are not replaceable, indicating similar limitations for both pre-built models.
Content CreationTie
  • •Both include dedicated multimedia keys for controlling volume and playback.
  • •The B1 Pro has a specific shortcut (Fn + Shift) for quickly accessing emojis, useful for social media.
  • •Both support seamless switching between macOS and Windows layouts, important for creators using multiple OSes.

Frequently Asked Questions (FAQ)

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