Compare Keychron B1 Pro vs B5 Pro Differences Side by Side

This comparison is for buyers deciding between Keychron's budget-friendly, ultra-slim wireless keyboards. The choice hinges on a fundamental trade-off: the compact 75% form factor of the B1 Pro versus the full 100% layout of the B5 Pro. Both share core features like triple-mode connectivity, a 1000 Hz polling rate, and programmable keys via Keychron Launcher, making the decision about physical size, layout needs, and intended mobility.

Model
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Rating	4.2 stars (15 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2024 Features a low-profile design Available in a 75% layout 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 Available in a 100% layout Built with the ANSI layout standard Equipped with a 1200 mAh battery Weighs about 623 g Sized at 10 x 438 x 121 mm Made with a ABS case
Score	Scores Performance: 47.8 Build Quality: 41.5 Productivity: 65.2 Customizability: 44.8 Portability: 77.6	Scores Performance: 48.3 Build Quality: 42.1 Productivity: 66.1 Customizability: 45.4 Portability: 51.1
Name	Name Keychron B1 Pro	Name Keychron B5 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 Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 100%
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 10 x 438 x 121 mm
Weight	Weight 425g	Weight 623g

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Pros and Trade-offs

Your primary need dictates the choice. If you require a number pad for data entry, spreadsheets, or dedicated num-key shortcuts, the Keychron B5 Pro is the logical pick. If your priority is saving desk space, portability, or you need a specific ISO layout, the Keychron B1 Pro is the better option. Both deliver the same core wireless performance and programmability.

Keychron B1 Pro

+Extremely portable 75% layout measuring 296mm wide and weighing 425g.
+Available in numerous ISO layouts including German, UK, Nordic, and Spanish.
+Features an ultra-thin, low-profile design cited as 5.2mm thick.
+Includes a protective, washable silicone skin according to the product listing.

−Smaller 800mAh battery compared to the B5 Pro.
−Lacks a dedicated number pad and function row keys.
−No mention of a magnetic storage slot for the wireless receiver.

Keychron B5 Pro

+Full-size 100% layout with a dedicated number pad.
+Larger 1200mAh battery capacity.
+Includes a magnetic storage slot on the keyboard for its 2.4 GHz receiver.
+Larger, potentially more stable chassis for desk use.

−Much larger and heavier at 438mm wide and 623g, less portable.
−Only listed with an ANSI layout, no ISO options.
−Thicker profile at 9.9mm, according to the manufacturer's description.

Which Keyboard Is Better for Your Needs?

The B5 Pro is the clear choice for office work and content creation where a number pad is essential. The B1 Pro dominates for travel and suits programmers who prefer a compact, portable layout with international ISO options. For gaming and modding, the keyboards are closely matched on core performance and software features, making the decision more about personal layout preference.

GamingTie

•Both offer a 1000 Hz polling rate for responsive input.
•Both support low-latency 2.4 GHz wireless and wired modes.
•Neither keyboard has RGB lighting, a common gaming feature.

OfficeKeychron B5 Pro

•The B5 Pro's full-size layout includes a dedicated number pad for data entry.
•Its larger 1200mAh battery promises longer use between charges.
•It includes a magnetic storage slot for its 2.4 GHz receiver.

ProgrammingKeychron B1 Pro

•The B1 Pro's 75% size saves desk space while retaining arrow and function keys.
•It is available in multiple ISO layouts, including UK and Nordic, for international users.
•Its lighter weight of 425g makes it easier to reposition on a desk.

TravelKeychron B1 Pro

•The B1 Pro is significantly smaller (296mm wide) and lighter (425g).
•Its low-profile design is only 5mm thick, per the manufacturer.
•The compact form factor fits more easily into bags and on cramped surfaces.

ModdingTie

•Both are pre-built with ABS keycaps and plastic cases.
•Both support customization via the Keychron Launcher web app for key remapping and macros.
•Vendor descriptions do not mention hot-swappable switches for either model.

Content CreationKeychron B5 Pro

•The full-size layout provides direct access to number keys for timeline scrubbing and shortcuts.
•The dedicated media keys, mentioned as a feature for both, are more accessible on a standard layout.
•The larger chassis may offer a more stable typing platform for long sessions.