Razer Basilisk V4 Pro raises price to $169.99 for new AI button

Razer has raised the price of its flagship Basilisk gaming mouse to $169.99 while redesigning the thumb controls to accommodate a new artificial intelligence feature. The company released the Basilisk V4 Pro on October 23, marking the first update to the line since the Basilisk V3 Pro 35K launched in October 2024. The new model retains the right-handed, contoured shape and RGB lighting of its predecessor but shifts the physical layout of the side buttons.

The primary addition is a third thumb button located in front of the existing two. This key opens Razer's AI prompt by default. A separate button beside the left mouse click now switches profiles. These changes bring the total number of programmable buttons to 12. Sarah Jacobsson Purewal, a senior editor at Tom's Hardware, tested the device and found that the new profile button sits too far forward for comfortable use with medium-sized hands. She noted that the button is positioned at the front edge of the 5.02-inch device.

The placement of the AI button creates a specific ergonomic issue. Because it matches the size of the other thumb controls, it pushes the existing cluster backward. This leaves the first standard thumb button, labeled MB4, difficult to reach. Purewal stated that all three thumb buttons felt slightly off during testing. Although the buttons can be remapped, the review questioned the necessity of a dedicated AI prompt key on every peripheral. She described the layout as awkward despite the mouse's overall functionality.

Weight and battery life have improved in the new model. The black version weighs 3.53 ounces, a reduction of nearly half an ounce compared to the 3.95-ounce V3 Pro 35K. While not ultralight, the reviewer found the lighter chassis easier to handle. Battery capacity has increased from 150 hours to 200 hours at a polling rate of 1,000 Hz over 2.4GHz wireless. At the maximum polling rate of 8,000 Hz, the battery lasts 54 hours. The mouse connects via 2.4GHz wireless, Bluetooth, or USB-C.

The device features the Focus Pro 50K optical sensor, which reaches 50,000 DPI and 930 IPS. It tracks on most surfaces, including glass panels at least 4mm thick. The fourth-generation optical switches are rated for more than 100 million clicks. Testing revealed no misclicks or double-clicks. The tilt wheel offers two tactile modes with 24 or 48 steps, as well as a free-spin mode. The free-spin setting was deemed too sensitive and prone to backscrolling, while the precision tactile mode received praise.

The Basilisk V4 Pro is available in black and white at the $169.99 price point. Razer also launched the Mouse Dock V2 Pro for $69.99. This accessory is a wireless charging dock with an integrated 8,000 Hz receiver and eight RGB zones. It is compatible with several older Razer mice. The mouse box includes a USB-A dongle, an adapter, and a 6-foot braided cable. It does not include a HyperFlex cable or grip tape.

Tom's Hardware positions the Basilisk V4 Pro between the DeathAdder V4 Pro and the Naga V3 Pro. The review cites the feel, lower weight, and extended battery life as strengths. It lists the impact of the AI button on the thumb layout, the price increase, and the slightly large size as drawbacks. The device is recommended for players seeking more functionality than a stripped-down shooter mouse but who do not require a button-heavy design.