Compare Keychron B31 vs V4 Max Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron B31 and Keychron V4 Max and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

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Main differences	Released in 2026 Available in a 75% layout Provides dedicated media keys Equipped with a 800 mAh battery Weighs about 520 g Sized at 26 x 138 x 327 mm Made with a ABS, Plastic case Features ABS keycaps Offers No RGB lighting	Released in 2024 Supports hot-swappable switches Available in a 60% layout Comes with a knob Supports QMK firmware Supports VIA configuration Includes screw-in stabilizers Has built-in sound dampening Uses a Gasket Mount mounting style Equipped with a 4000 mAh battery Weighs about 645 g Sized at 28 x 123 x 305 mm Made with a Plastic, ABS case Features PBT keycaps Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 57.1 Build Quality: 41.9 Productivity: 66.7 Customizability: 45.5 Portability: 78.1	Scores Performance: 78.6 Build Quality: 85.7 Productivity: 94.7 Customizability: 97.4 Portability: 88.4
Name	Name Keychron B31	Name Keychron V4 Max
Release year	Release year 2026	Release year 2024
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Linear, Tactile, Clicky
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 60%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 800 mAh	Battery capacity 4000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style -	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS, Plastic	Case Material Plastic, ABS
Keycaps Material	Keycaps Material ABS	Keycaps Material PBT
Dimensions	Dimensions 26 x 138 x 327 mm	Dimensions 28 x 123 x 305 mm
Weight	Weight 520g	Weight 645g