Compare Keychron B1 Pro vs B3 Pro Differences Side by Side

This comparison is for buyers deciding between Keychron's two similar low-profile wireless keyboards. The choice is difficult because both share a 75% form factor, triple-mode connectivity, and web-based software. The decision hinges on whether you need specific international keyboard layouts or prioritize maximum battery runtime, as other specs are nearly identical.

Model
			Select a keyboard to compare
Rating	4.2 stars (15 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2024 Built with the ANSI, ISO, JIS layout standard Equipped with a 800 mAh battery Weighs about 425 g Sized at 5 x 296 x 130 mm Made with a Plastic, ABS case	Released in 2025 Built with the ANSI layout standard Equipped with a 1200 mAh battery Weighs about 410 g Sized at 3 x 100 x 380 mm Made with a ABS case
Score	Scores Performance: 48.1 Build Quality: 41.6 Productivity: 66.1 Customizability: 45 Portability: 77.9	Scores Performance: 48.5 Build Quality: 42.4 Productivity: 66.9 Customizability: 46 Portability: 78.2
Name	Name Keychron B1 Pro	Name Keychron B3 Pro
Release year	Release year 2024	Release year 2025
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Linear, Tactile, Clicky
Profile	Profile Low Profile	Profile Low Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
Layout Standard	Layout Standard ANSI, ISO, JIS	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 1200 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 -
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight	Backlight
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic, ABS	Case Material ABS
Keycaps Material	Keycaps Material ABS	Keycaps Material ABS
Dimensions	Dimensions 5 x 296 x 130 mm	Dimensions 3 x 100 x 380 mm
Weight	Weight 425g	Weight 410g

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Pros and Trade-offs

Your geographic location and keyboard layout standard are the ultimate deciding factors. If you need a German, UK, Nordic, or other ISO layout, the Keychron B1 Pro is the necessary choice. If you use a standard ANSI layout and value longer battery life and a tad less weight, the Keychron B3 Pro is the better option. All other features, from connectivity to software, are shared.

Keychron B1 Pro

+Extensive ISO layout support including German, UK, Nordic, and several others.
+Includes a protective, washable silicone skin for spill and dust resistance.
+Programmable via the Keychron Launcher web app for key remapping and macros.
+Triple-mode connectivity with 2.4 GHz, Bluetooth 5.2, and wired USB-C.

−Smaller 800mAh battery compared to the B3 Pro.
−Slightly heavier at 425g.
−Limited to pre-built construction with soldered switches.

Keychron B3 Pro

+Larger 1200mAh battery for longer wireless use.
+Slightly lighter weight of 410g.
+Includes a storage slot on the keyboard for its 2.4 GHz receiver.
+Programmable via the Keychron Launcher web app for key remapping and macros.

−Only available in a standard ANSI layout, lacking ISO options.
−Limited to pre-built construction with soldered switches.
−No user reviews are available yet to confirm real-world experience.

Which Keyboard Is Better for Your Needs?

The B1 Pro is the clear choice for office and programming use in regions requiring ISO layouts like Germany or the UK. The B3 Pro has a slight edge for travel due to its larger battery and lower weight. For gaming, modding, and content creation, the keyboards are effectively tied, sharing core performance and customization features. Your location and specific layout needs are the primary deciders.

GamingTie

•Both offer a 1000 Hz polling rate over their 2.4 GHz wireless connection.
•Both have the same low-profile switch options and 75% layout.
•Latency and performance characteristics are functionally equivalent.

OfficeKeychron B1 Pro

•The B1 Pro supports a wide range of ISO layouts like German, UK, and Nordic, which are common in European offices.
•Both include multimedia keys and Mac/Windows support.
•Both feature a low-profile, quiet design suitable for shared spaces.

ProgrammingKeychron B1 Pro

•The B1 Pro's ISO layout support includes keys like the larger Enter key preferred by some programmers in certain regions.
•Both keyboards are programmable via the Keychron Launcher web app for macros and key remapping.
•The 75% layout on both preserves arrow and navigation keys.

TravelKeychron B3 Pro

•The B3 Pro is slightly lighter at 410g compared to the B1 Pro's 425g.
•The B3 Pro's listed 1200mAh battery is larger than the B1 Pro's 800mAh, potentially offering longer use between charges.
•Both are similarly slim and include a protective silicone skin.

ModdingTie

•Both are pre-built with soldered switches, limiting hardware modding.
•Software customization is identical via the Keychron Launcher web app.
•Both use ABS keycaps and plastic cases with similar construction.

Content CreationTie

•Both offer a shortcut (fn + shift) for quick emoji access.
•The programmable layers via Keychron Launcher are identical for creating shortcuts.
•The typing experience with concave keycaps and low-profile switches is the same.