Keychron K3 Pro vs K5 MaxCompact or Full-Size
Choose the K3 Pro for a more compact, lighter keyboard, or the K5 Max for a full-size layout and 2.4 GHz connectivity.
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4.8 (52)4.8 · 52 reviews
from$67at Keychron
4.6 (13)4.6 · 13 reviews
from$94at Keychron
Which one should you get?
Get the
Keychron K3 Pro
Build quality in the top 15% of 75% boards under $100.
- 75% layout and 525 g weight make it the smaller, lighter option.
- Supports Bluetooth and wired connectivity, with the vendor listing Bluetooth connections to up to three devices.
- QMK and VIA support, plus a hot-swappable version.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No numpad.
Get the
Keychron K5 Max
Battery
Build quality in the top 15% of 100% boards under $100.
- 100% layout with 108 keys for buyers who want a full-size arrangement.
- Supports 2.4 GHz, Bluetooth, and wired connections.
- The 2000 mAh battery is larger than the K3 Pro's 1550 mAh battery.
- 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-ES, ISO-SW. The other board is sold in those layouts.
Choose the K3 Pro if portability and a compact 75% layout matter more than a full-size key set or 2.4 GHz wireless. Choose the K5 Max if you want 108 keys, 2.4 GHz connectivity, and the added internal foam. Both provide QMK and VIA support, so customization alone is not the deciding factor.
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 Pro
Keychron K5 Max
Layout size
75%
100%
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Battery
1,550 mAh
2,000 mAh
A larger battery means fewer cables during the day
Case material
ABS, Aluminum, Plastic
ABS, Aluminum
Mount style
Plate Mount, Tray Mount
PCB Mount, Plate Mount
- Keychron K3 Pro
- Keychron K5 Max
- Performance
- 8281
- Build quality
- 8181
- Productivity
- 8088
- Customizability
- 8988
- Portability
- 7853
- Hot-swappable
- Low profile
- Max polling rate: 1,000 Hz
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
What will you mostly use it for?
The K3 Pro is the more practical pick when carrying the keyboard or keeping a smaller desk footprint matters. The K5 Max has the edge for users who want a full-size layout or 2.4 GHz wireless, and its internal foam may appeal to buyers focused on the typing sound and feel. Both have substantial customization options through QMK, VIA, and hot-swap variants. For modding, the K5 Max vendor description names a wider set of compatible switch brands, though both support hot-swapping.
Pick the Keychron K5 Max
- The K5 Max supports 2.4 GHz wireless with a 1000 Hz polling rate in that mode.
- Both keyboards list a 1000 Hz polling rate for wired use and N-key rollover for wired and wireless modes.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Pro
52 owner reviews
“For anyone buying this, remember to toggle the switch to the correct operating system. Other than that, the feel is good and it comes with a good feature set for a low price”
Keychron K5 Max
13 owner reviews
“This is by far the best keyboard I've ever had. I did my research with AI defined the one I should get. I'm glad I did this first! I type about a hundred words a minute and do a lot of document creation as well as coding. This keyboard keeps up with me in the…”
“I would give this product a higher rating if the key caps were shine through. I saw that ither versions of the K5 QMK (non max) all had shine through key caps and foolishly assumed this keyboard would too. The MAX branding makes one think that you are getting…”
Keychron K3 Pro vs K5 Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
12 of 26 specs differ
Keychron K3 Pro
Keychron K5 Max
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
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 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockDoes not ship to you
Keychron K5 Max
Keychron
ISO-DE, ISO-UK, ISO-Nordic
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK
In 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 Pro vs K5 Max: your questions
The K3 Pro has a 75% layout and weighs 525 g, while the K5 Max has a 100% layout with 108 keys and weighs 720 g. The K5 Max also supports 2.4 GHz wireless, which the K3 Pro does not list.
Yes, the K5 Max supports 2.4 GHz, Bluetooth, and wired connections. Its vendor description lists a 1000 Hz polling rate for 2.4 GHz and wired modes.
No, the K3 Pro is a 75% keyboard. The K5 Max is the full-size option, with a 100% layout and 108 keys.
The K3 Pro weighs 525 g, while the K5 Max weighs 720 g. The K3 Pro is also shorter, measuring 306 mm wide compared with 424 mm for the K5 Max.
Both models offer hot-swappable versions. The K3 Pro vendor description specifies Gateron low-profile mechanical switches, while the K5 Max description names Gateron and Keychron low-profile mechanical switches.
Both keyboards list QMK and VIA support. Their vendor descriptions also identify Keychron Launcher for key remapping and macros.
The K5 Max has a 2000 mAh battery, compared with 1550 mAh in the K3 Pro. The K5 Max vendor page also states up to 95 hours of battery life.
The vendor descriptions list low-profile double-shot PBT keycaps for both and describe the material as non-backlight shine-through. The K3 Pro Special Edition instead has dye-sublimated PBT keycaps.
The K3 Pro is the more compact choice, with a 75% layout and dimensions of 306 x 116 mm. The K5 Max is 424 x 119 mm and uses a 100% layout.
Both list Mac/Win support, and each vendor description says the keyboard includes keycaps for macOS and Windows. The vendor pages also list Keychron Launcher compatibility with macOS, Windows, and Linux.
The K5 Max vendor description lists IXPE acoustic foam and latex foam inside the keyboard. The K3 Pro metadata does not list those foam layers.
The K5 Max has an advantage for wireless gaming because it supports 2.4 GHz with a listed 1000 Hz polling rate. Both keyboards list a 1000 Hz wired polling rate and N-key rollover for wired and wireless modes.
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