Keychron B31 vs B6 ProCompact 75% vs Full-Size Slim Keyboard
Choose the B31 for a portable, compact layout with adjustable tilt, or the B6 Pro for a full-size, ultra-slim keyboard with a much larger battery.
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Which one should you get?
Get the
Keychron B31
Compact 75%
Build quality in the bottom 20% of 75% boards under $50.
- Compact 75% layout saves considerable desk space.
- Offers adjustable typing angles (5°, 6.5°, 9°) for ergonomics.
- Includes a magnetic storage slot for the 2.4 GHz wireless receiver.
- Switches are soldered. Swapping them means soldering.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- No numpad.
Get the
Keychron B6 Pro
Full-Size Slim Keyboard
Build quality in the bottom 15% of 100% boards under $100.
- Full-size layout includes a dedicated number pad.
- Substantially larger 1200mAh battery promises up to 1200 hours of use.
- Ultra-slim, low-profile design with a 5mm thickness and 3° typing angle.
- 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.
Your primary need dictates the choice. If a compact, portable keyboard with a traditional scissor-feel and adjustable angles is the goal, the Keychron B31 is the suitable pick. If you require a full-size layout with a number pad, prioritize maximum battery life, and prefer an ultra-slim, low-profile typing experience, the Keychron B6 Pro is the better option. Consider the B31's non-replaceable keycaps a permanent limitation, while the B6 Pro's fixed tilt is its main ergonomic trade-off.
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 B31
Keychron B6 Pro
Layout size
75%
100%
Battery
800 mAh
1,200 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Mount style
PCB Mount
Plate Mount
Weight
520 g
623 g
Heavier boards stay planted and lighter ones travel
- Keychron B31
- Keychron B6 Pro
- Performance
- 5954
- Build quality
- 5245
- Productivity
- 6968
- Customizability
- 4752
- Portability
- 7951
- Connection: Bluetooth, 2.4 GHz, Wired
- Max polling rate: 1,000 Hz
- Case material: ABS, Plastic
- Switch options: Clicky, Linear, Tactile
- Keycaps: ABS
What will you mostly use it for?
The B6 Pro wins for office use and content creation due to its full layout with number pad and exceptional battery life. The B31 is the clear choice for travel and has an edge for gaming due to its space-saving design. For programming, it's a tie, hinging on personal layout preference. The B6 Pro also holds a slight advantage for modders, as its keycaps are not explicitly listed as non-replaceable.
Pick the Keychron B31
- The B31's 1000 Hz polling rate over its 2.4 GHz connection matches the B6 Pro for responsiveness.
- Its 75% layout frees up more desk space for mouse movement compared to the full-size B6 Pro.
- The B31 offers adjustable typing angles (5°, 6.5°, 9°) for ergonomic positioning during long sessions.
Keychron B31 vs B6 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 22 specs differ
Keychron B31
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
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B31
No ISO layout at the stores we track.
Keychron B6 Pro
Keychron
ISO-DE
In stockShips to you
Keychron (DE)
ISO-DE
In stockDoes not ship to you
MonacoKeys
ISO-DE
Out of 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 B31 vs B6 Pro: your questions
The Keychron B6 Pro has a significantly larger battery. Its 1200mAh battery is rated for up to 1200 hours of use. The B31 uses an 800mAh battery rated for up to 320 hours.
No. The Keychron B31 product specifications explicitly state 'Keycaps are not replaceable.' The listing for the B6 Pro does not contain this same warning.
Yes, the Keychron B6 Pro features north-facing RGB backlighting. The Keychron B31 has no backlighting of any kind.
The B31 is a 75% layout keyboard, measuring 327mm in length and omitting the number pad. The B6 Pro is a full-size 100% layout keyboard, measuring 429mm in length and including a full number pad and navigation cluster.
Yes. Both the Keychron B31 and B6 Pro offer tri-mode connectivity, supporting 2.4 GHz wireless, Bluetooth, and a wired USB-C connection.
Both are designed for quiet operation, but with different mechanisms. The B31 uses a scissor switch mechanism marketed for silent typing. The B6 Pro is an ultra-slim, low-profile keyboard which typically also offers a quiet typing experience.
Yes, both keyboards support customization through the Keychron Launcher web app. This online tool allows for key remapping, macro creation, and setting shortcuts without needing installed software.
Yes. The Keychron B31 specifications list adjustable angles of 5°, 6.5°, and 9°. The B6 Pro has a fixed low typing angle of approximately 3°.
Both keyboards offer a 1000 Hz polling rate when using their 2.4 GHz wireless connection or the wired USB-C mode, which is standard for responsive gaming.
The Keychron B31 is more portable. It is lighter (520g vs 623g), significantly shorter in length, and its 75% layout is easier to pack. The B31 also has a magnetic slot to store its wireless receiver.
The Keychron B6 Pro keycaps are made from ABS plastic, according to the product metadata. The manufacturer describes them as concave keycaps designed for precise input.
Yes. Both the Keychron B31 and B6 Pro list Mac and Windows support. They include a system toggle switch to change between macOS and Windows key layouts.
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