Keychron B4 Pro vs B6 ProCompact Layout or Full Size
Choose the B4 Pro for a more compact 96% layout and lower weight, or the B6 Pro for a full-size layout and ISO or JIS options.
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Which one should you get?
Get the
Keychron B4 Pro
Build quality in the bottom 10% of 96% boards under $100.
- Compact 96% ANSI layout retains a numpad in a smaller layout than the B6 Pro's full-size design.
- Weighs 495 g, less than the B6 Pro's 623 g.
- Supports Bluetooth, 2.4 GHz, and wired connections, with 1000 Hz polling listed.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Get the
Keychron B6 Pro
Battery
Build quality in the bottom 15% of 100% boards under $100.
- Full-size layout with 109 keys and multimedia keys.
- Available in ANSI, ISO, and JIS layouts.
- Supports Bluetooth, 2.4 GHz, and wired connections, with 1000 Hz polling listed.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Pick the B4 Pro if saving desk and bag space matters more than having a conventional full-size layout, and note that its listed weight is lower. Choose the B6 Pro if you want a full-size keyboard, multimedia keys, or ISO and JIS layout options. Both are low-profile boards with soldered switches, so neither is suited to tool-free switch changes.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron B4 Pro
Keychron B6 Pro
Layout size
96%
100%
Battery
800 mAh
1,200 mAh
A larger battery means fewer cables during the day
Case material
ABS
ABS, Plastic
Weight
495 g
623 g
Heavier boards stay planted and lighter ones travel
Layout standard
ANSI
ANSI, ISO, JIS
ISO and JIS exist so regional layouts fit
- Keychron B4 Pro
- Keychron B6 Pro
- Performance
- 5154
- Build quality
- 4345
- Productivity
- 7068
- Customizability
- 4252
- Portability
- 5251
- Connection: Bluetooth, 2.4 GHz, Wired
- Low profile
- Max polling rate: 1,000 Hz
- Switch options: Clicky, Linear, Tactile
- Keycaps: ABS
What will you mostly use it for?
The B6 Pro is the more suitable pick when full-size keys, multimedia controls, or an ISO or JIS variant matter. The B4 Pro is the more travel-friendly choice based on its lower weight and compact 96% layout. Gaming is a close call because both list the same polling rate and connection types. For modding, both require soldering to change switches, while the B6 Pro adds a specific Cherry-profile keycap caveat.
It's a tie
- Both list 1000 Hz polling and Bluetooth, 2.4 GHz, and wired connectivity.
- Both have soldered switches, so replacing switches requires soldering.
Keychron B4 Pro vs B6 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 21 specs differ
Keychron B4 Pro
Keychron B6 Pro
Switch options
Mount style
Low profile
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B4 Pro
No ISO layout at the stores we track.
Keychron B6 Pro
Keychron
ISO
In stockShips to you
Keychron (DE)
ISO
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
Keychron B4 Pro vs B6 Pro: your questions
The B4 Pro is a 96% ANSI keyboard, while the B6 Pro is full size with 109 keys and ANSI, ISO, and JIS layout options. The B4 Pro weighs 495 g, compared with 623 g for the B6 Pro.
The B6 Pro is the full-size model, listed with 109 keys. The B4 Pro uses a compact 96% layout that still includes a numpad.
Yes, the B6 Pro is listed in ANSI, ISO, and JIS layouts. The vendor describes ISO variants including French, Nordic, Hungarian, German, UK, and Swiss.
The B4 Pro is listed as ANSI only, and its compatibility rules specify that ISO variants are not offered. Consider the B6 Pro if you need an ISO layout.
No, both keyboards are limited to low-profile switches and keycaps, so standard MX keycaps will not fit. The B6 Pro also has north-facing LEDs, which can cause Cherry-profile keycaps to hit the switch housing.
No, both models have soldered switches. Replacing switches requires soldering rather than a simple hot-swap.
The B4 Pro weighs 495 g, while the B6 Pro weighs 623 g. That makes the B4 Pro the lighter option for carrying.
Both models list Bluetooth, 2.4 GHz, and wired connectivity, along with 1000 Hz polling. The B4 Pro vendor description specifies Bluetooth 5.2, and the B6 Pro vendor description also specifies Bluetooth 5.2.
Keychron advertises up to 300 hours of use on a charge for the B4 Pro. The metadata lists an 800 mAh battery.
The metadata lists an 1200 mAh battery for the B6 Pro. Its vendor description separately advertises up to 1200 hours of use, so check the model details carefully when comparing battery claims.
Both vendor descriptions say Keychron Launcher supports key remapping, macros, and shortcuts. The B4 Pro description names Launcher customization, and the B6 Pro description also presents Launcher for programming the keyboard.
The B4 Pro is the more travel-oriented choice based on its 96% layout and 495 g weight. The B6 Pro is full size and weighs 623 g, though both support wireless and wired use.
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