Keychron K4 and K10 Ultra 8K Keyboards Launch at $115

Keychron has expanded its Ultra 8K lineup with two new mechanical keyboards that bring 8kHz polling rates to larger form factors. Gamers and typists who rely on high-speed input will find these models appealing because the faster response time reduces latency between keystrokes and screen updates. The new additions join existing compact options by offering full-size and near-full-size layouts for users who need more keys without sacrificing speed.

Larger form factors join the high-speed wireless series

The two models are the K4 Ultra 8K and the K10 Ultra 8K. The K4 features a 96% layout that retains a numeric keypad while saving desk space. The K10 offers a full 100% layout for users who require a complete number pad and function row. Both keyboards support tri-mode connectivity, allowing users to switch between wireless and wired connections seamlessly.

Spec comparison

Performance is driven by an 8kHz polling rate that updates input data 8,000 times per second. Each keyboard houses a large 4000mAh battery that delivers up to 600 hours of battery life even when running at the high polling rate. The devices run on ZMK firmware, which provides open-source customization options for power users. Keychron equips the boards with their proprietary Apex switches, available in linear, micro-click, and early-click variants.

The construction includes an ABS plastic case with six layers of damping material to reduce noise. A steel plate sits inside the chassis to provide structural rigidity and a distinct typing feel. The PCB supports hot-swappable switches, so users can change switches without soldering. Keycaps use OSA height PBT material with double-shot injection for durability. RGB lighting is integrated into the board for visual customization.

Both the K4 and K10 Ultra 8K are priced at 114.99 USD (around $115). This pricing makes the high-polling-rate technology accessible for users who previously had to choose between compact layouts and full-size functionality. We looked at Keychron Launches K2 Ultra 8K and in our earlier Keychron coverage, noting the company's push toward ultra-fast wireless options. These new models complete the series by covering the larger desk space segment with the same core speed technology.