Keychron K3 V2 vs K4 ProCompact vs Full-Featured
Choose the Keychron K4 Pro if you want programable keys and a numpad, or the K3 V2 if ultra-slim portability is your top priority.
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4.8 (2,258)4.8 · 2,258 reviews
from$105at Keychron (DE)
4.7 (7)4.7 · 7 reviews
from$69at Keychron
Which one should you get?
Get the
Keychron K3 V2
Compact
Build quality in the bottom 50% of 75% boards under $150.
- Ultra-slim design with low profile switches is 40% slimmer than conventional switches.
- 75% layout saves significant desk space and is lighter for travel.
- Features a streamlined aluminum body offering a premium feel at a lower weight.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- Missing ISO-FR, ISO-SW. The other board is sold in those layouts.
- No numpad.
Get the
Keychron K4 Pro
Full-Featured
Build quality in the top 10% of 96% boards under $100.
- Full QMK and VIA support enables deep programability via the Keychron Launcher web app.
- 96% layout includes a numpad for data entry without requiring a full-size keyboard.
- 4000mAh battery provides significantly longer wireless run time.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
If your workspace demands a compact, easily portable keyboard, the Keychron K3 V2 is the clear choice with its slim profile and lighter build. However, if you need a numpad, programable firmware like QMK/VIA, or a larger battery for all-day use, the Keychron K4 Pro offers far more features and flexibility. The K4 Pro is the more versatile and customizable keyboard for power users, while the K3 V2 excels in portability and minimalism.
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 K3 V2
Keychron K4 Pro
Layout size
75%
96%
Battery
1,550 mAh
4,000 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Case material
Aluminum, Plastic
ABS, Plastic
QMK
No
Yes
The deep option when you want to remap every key
- Keychron K3 V2
- Keychron K4 Pro
- Performance
- 6381
- Build quality
- 6584
- Productivity
- 6695
- Customizability
- 6896
- Portability
- 8054
- Connection: Bluetooth, Wired
- Hot-swappable
- Switch options: Clicky, Linear, Tactile
- Mount style: Tray Mount
What will you mostly use it for?
The Keychron K4 Pro wins in five of six categories due to its programable firmware, full-size layout, and gaming-ready 1000 Hz polling rate. The K3 V2 only takes the Travel category, leveraging its ultra-slim low profile construction and lighter design. For office, programming, and content creation, the K4 Pro's numpad and deep customization provide clear advantages. The K3 V2 remains the better choice for users who frequently move their workstation and need a compact, slim keyboard.
Pick the Keychron K4 Pro
- The K4 Pro has a 1000 Hz polling rate which is preferable for gaming responsiveness.
- The K4 Pro includes sound dampening foam and a steel plate for a more stable typing feel.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 V2
2,258 owner reviews
“I had a full-size mechanical keyboard before that was tking too much of deskspace. This keyboard with it's 65% size is amazing and saves quite some desk space.”
“Non-rgb version feels nice, but the battery is killing the whole experience... Even with the lights turned off, i can't get the keyboard to work on battery longer than 3-4 days, which is super annoying and not making me trust into this brand. Especially if…”
Keychron K4 Pro
7 owner reviews
“I previously had a normal K4 and i love the new one, the only thing is that the stabilizers lube work is kinda bad and the space bar was very rattly but after some lube work the K4 pro retakes the perfect productivity keyboard.”
Keychron K3 V2 vs K4 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 27 specs differ
Keychron K3 V2
Keychron K4 Pro
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
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
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K3 V2
Keychron
ISO-ES
Out of stockShips to you
Keychron
ISO-UK
Out of stockShips to you
Keychron
ISO-DE
Out of stockShips to you
Keychron
ISO-Nordic
Out of stockShips to you
Keychron (DE)
ISO-DE
In stockDoes not ship to you
Keychron (DE)
ISO-ES
Out of stockDoes not ship to you
Keychron (DE)
ISO-UK
Out of stockDoes not ship to you
Keychron K4 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW
Out of stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
Keychron K3 V2 vs K4 Pro: your questions
The Keychron K4 Pro is better for programming due to its full QMK and VIA support. This allows you to remap any key, create complex macros, and program custom shortcuts using the Keychron Launcher web app, offering a level of customization that the K3 V2 does not have.
No, the Keychron K3 V2 has a compact 75% layout which does not include a dedicated numpad. If a numpad is essential for your workflow, you should consider the 96% layout of the Keychron K4 Pro which includes a full number pad.
Yes, the K4 Pro is hot-swappable and compatible with almost all 3pin and 5pin MX style mechanical switches on the market. This includes popular brands like Cherry, Gateron, and Kailh, allowing for easy customization without soldering.
Yes, the K3 V2 is hot-swappable, but it only works with low profile Keychron Optical switches. It is not compatible with standard MX style mechanical switches, so your choice of replacement switches is limited to Keychron's own optical switch line.
The Keychron K4 Pro has a significantly larger 4000mAh battery, which offers much longer wireless run time compared to the Keychron K3 V2's 1550mAh battery. For extended unplugged use, the K4 Pro is the better option.
Yes, both the Keychron K3 V2 and K4 Pro support Bluetooth and wired connections. The K3 V2 features Bluetooth 5.1, while the K4 Pro also uses Broadcom Bluetooth 5.1 for connecting up to 3 devices wirelessly.
The Keychron K4 Pro features improved screw-in PCB stabilizers, which are designed to reduce wobbliness on large keys. The K3 V2 uses standard stabilizers. The K4 Pro's stabilizers are a more premium choice favored by keyboard enthusiasts.
Yes, the K4 Pro offers three levels of adjustable typing angle (3°, 7°, and 10°). This ergonomic support helps reduce wrist strain during long typing sessions, a feature not detailed for the K3 V2 beyond its two-level rubber feet.
Yes, the K3 V2 is significantly lighter due to its ultra-slim low profile design and streamlined aluminum body. The K4 Pro is bulkier and heavier at 1280g, making the K3 V2 much more suitable for travel.
The K4 Pro comes with double-shot PBT keycaps in a unique OSA profile. PBT is known for its oil resistance and durability compared to the ABS keycaps found on the K3 V2. The K4 Pro keycaps are designed for a comfortable fingertip feel.
No, the K3 V2 does not support QMK or VIA firmware, so it cannot be programmed with custom macros or keymaps. For programmable macros, the K4 Pro with its QMK and VIA support is the only option between these two.
The Keychron K4 Pro is designed to be quieter, featuring sound-absorbing foam and a thick silicone dampening bottom pad. The K3 V2 does not specify having such sound dampening features, so the K4 Pro is likely the more office-friendly choice for noise levels.
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