Keychron K1 Max vs K1 Ultra
Choose the K1 Ultra for its 8000 Hz wired and 2.4 GHz polling and longer advertised battery runtime, or the K1 Max for QMK and broader layout options.
3.3 · 16 reviews
from$89
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Which one should you get?
Get the
Keychron K1 Max
Battery
- QMK and VIA support are listed in the K1 Max metadata.
- Layout options include ISO-DE, ISO-Nordic, ISO-UK, ISO, and ANSI.
- 1000 Hz polling rate and N-key rollover are listed.
- Its 1000 Hz polling rate is lower than the K1 Ultra's 8000 Hz in wired and 2.4 GHz modes.
- The vendor page states up to 95 hours of battery life, versus up to 490 hours for the K1 Ultra with backlight off.
- The vendor identifies switch hot-swap as an option for the RGB hot-swappable version, so buyers should check the chosen variant.
Get the
Keychron K1 Ultra
polling rate
- 8000 Hz polling is specified for wired and 2.4 GHz modes.
- The vendor advertises up to 490 hours of use with backlight off.
- Its aluminum-and-wood body and anodized aluminum plate are specifically identified.
- Its listed layout is ANSI, with no ISO options shown.
- The K1 Ultra uses ZMK rather than the K1 Max's listed QMK and VIA support.
- Its 2600 mAh battery capacity is lower than the K1 Max's listed 4000 mAh, despite the Ultra's longer vendor-stated runtime.
Pick the K1 Ultra if you prioritize its 8000 Hz wired and 2.4 GHz polling, long stated runtime, or configurable knob. Choose the K1 Max if you need an ISO layout option or prefer its QMK and VIA support. Before ordering the Max, confirm that the selected version is hot-swappable.
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 K1 Max
Keychron K1 Ultra
Battery
4,000 mAh
2,600 mAh
Max polling rate
1,000 Hz
8,000 Hz
Case material
ABS, Aluminum, Plastic
ABS, Aluminum, Metal, Wood
Mount style
PCB Mount, Plate Mount
Plate Mount
Knob
No
Yes
- Keychron K1 Max
- Keychron K1 Ultra
- Performance
- 8289
- Build quality
- 8270
- Productivity
- 9084
- Customizability
- 8974
- Portability
- 7377
- Layout size: 80%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Low profile
- Switch options: Clicky, Linear, Tactile
- Sound dampening
What will you mostly use it for?
The K1 Ultra has the clearer advantage for gaming specifications and advertised battery runtime, while its configurable knob also gives it an edge for some creative workflows. The K1 Max is the more flexible choice for layout selection and for buyers who specifically want QMK and VIA. Both are 80% hot-swappable keyboards with tri-mode connectivity, so the decision mostly turns on those differences rather than their shared basics.
Pick the Keychron K1 Ultra
- The K1 Ultra specifies 8000 Hz polling over wired and 2.4 GHz, compared with 1000 Hz for the K1 Max.
- Both models list N-key rollover and 2.4 GHz connectivity.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K1 Max
16 owner reviews
“My first better keyboard and I am absolutely satisfied. We'll see how it works after a longer time. I just thought of one small thing, I have nowhere to hide the receiver when I leave with just the laptop and I want to leave the keyboard at home. Like you can…”
“Beware of the double-clicking issue. I have got 2 units of this. They're both having the same problem and worse.”
Keychron K1 Ultra
1 owner reviews
“Feels a little bit high after the MacBook keyboard, but one will get used to it. The quality is amazing.”
Keychron K1 Max vs K1 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 27 specs differ
Keychron K1 Max
Keychron K1 Ultra
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
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
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Keychron K1 Max vs K1 Ultra: your questions
The K1 Ultra lists 8000 Hz polling over wired and 2.4 GHz, while the K1 Max lists 1000 Hz. Both include 2.4 GHz connectivity and N-key rollover.
The K1 Max is listed at 1000 Hz. Its vendor page specifies that rate for wired and 2.4 GHz modes.
Keychron advertises up to 490 hours with the backlight off. Its listed battery capacity is 2600 mAh.
No, the vendor pages state up to 95 hours for the K1 Max and up to 490 hours for the K1 Ultra with backlight off. The K1 Max metadata lists a larger 4000 mAh battery, but that does not change the vendor-stated runtime comparison.
Both models list hot-swappable switches. The K1 Max vendor page describes hot-swap as an option and says its version is compatible with Gateron and Keychron low-profile mechanical switches.
Yes. Its listed layout options include ISO-DE, ISO-Nordic, ISO-UK, and ISO, as well as ANSI. The K1 Ultra is listed as ANSI.
Yes, the K1 Ultra vendor description identifies a multifunction rotary knob. It says the knob controls volume by default and can be customized through Keychron Launcher.
The K1 Max lists QMK support and the vendor describes QMK firmware with Launcher. The K1 Ultra vendor page identifies ZMK firmware and Launcher.
Both models list Bluetooth and 2.4 GHz wireless connectivity, as well as a wired connection. Both also list N-key rollover for wireless and wired use.
The K1 Ultra is described as having an aluminum-and-wood body and an anodized aluminum alloy plate. The vendor also specifies an ABS bottom case.
Keychron lists IXPE foam, EPDM foam, PET film, and bottom-case acoustic foam in the K1 Ultra's internal acoustic structure. The K1 Max vendor description mentions IXPE and latex foam.
The K1 Ultra has a configurable knob that the vendor says can be assigned to tasks such as changing brush size or zooming. Both models support key remapping and macros through Keychron Launcher.
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