Keychron
Keychron K1 Ultra 8K
Released 2026
Researched from maker specs and published sources. Last checked Oct 18, 2026.
K1 Ultra 8K, from Keychron's store
The K1 Ultra 8K is the slim TKL with 8000 Hz polling, ZMK firmware, aluminum and wood and a 490-hour battery rating. No board-specific review was found.
Sources
Our take, based on research
The top K1. Check the ZMK firmware first.
Overview
The K1 Ultra 8K is the premium K1. Keychron lists an 80% layout, 2.4 GHz plus Bluetooth plus wired at 8000 Hz, hot-swappable Keychron Milk POM switches (Red, Brown or Banana), an aluminum and wood body with an anodized aluminum plate, LSA double-shot PBT keycaps that are not shine-through, ZMK firmware with the Launcher, a 2600 mAh battery rated up to 490 hours, 628.9 g and N-key rollover wired and wireless.
No review of this model could be opened. Tom's Hardware's K3 Ultra review, on the 75% sibling with the same platform, called it the best low-profile mechanical keyboard on the market, praising the 8 kHz polling, damping and battery, while finding the software online-only and the keycaps average.
Compared with the K1 Max, the Ultra changes firmware (ZMK instead of QMK/VIA), polling and battery capacity.
Pros & Cons
- 8000 Hz polling and 2.4 GHz wireless (maker)
- Battery rated up to 490 hours with a 2600 mAh cell
- Aluminum and wood body with an aluminum plate
- PBT LSA keycaps
- Hot-swappable Milk POM switches
- Runs ZMK instead of QMK/VIA, so existing keymaps do not carry over
- No board-specific review was found; sibling coverage only (Tom's Hardware, K3 Ultra)
- Software is online-only on the sibling K3 Ultra (Tom's Hardware)
- Non-shine-through keycaps
- Low-profile switch compatibility only
Who Is This For?
- Buyers who want a slim TKL with 8 kHz polling and very long battery life
- Travelers who prefer a wood-and-aluminum look
- Players who want low latency wireless in a slim board
- QMK/VIA users who want to keep existing layouts
- Buyers who need verified reviews of this exact board
- Anyone who wants shine-through legends
Where to Buy
Dimensions
358.6 x 128.3 mm
Weight
628.9 g +/- 10 g
Case Material
Aluminum + Wood
Connectivity
Both
Plate Options
Case Colors
Software Support
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