The first project, Mix Check Studio, gives you AI-based feedback on your mixes and masters. You upload an audio file, select the type of track and the genre, and the service spits out detailed feedback you can use to improve your work. It's free for musicians and audio engineers who want to improve their craft without paying for it.
Another good option is Cryo Mix. The AI-based service offers a variety of tools to improve your audio, including an AI Mixing tool and an AI Audio Separator. Cryo Mix also offers an AI Mastering tool to give you industry-standard quality, and it's got an easy-to-use interface to get to all the tools.