Colourlab Ai is an AI-powered color grading tool designed for professional video post-production. It automates technical color correction tasks such as shot matching and balancing, enabling colorists and editors to focus on creative grading. The software runs entirely on-device and delivers real-time performance, with version 3.5 claiming 22× speed improvements on Apple M1 hardware. Colourlab Ai integrates as an OFX plugin into DaVinci Resolve and also supports Adobe Premiere Pro, Final Cut Pro, Nuke, Flame, and Baselight. Key features include automatic sequence matching, one-click color balance, and film emulation through companion products like Filmlab Ai and Look Designer. The tool is used by independent colorists, post-production houses, and cinematographers for both technical and creative grading workflows. A private beta for version 4 is currently available at no cost.