If you're looking for another LALAL.AI alternative, AudioShake is a good choice. It uses AI to separate stems from audio tracks, a technology useful for mixing and mastering, localization and interactive experiences. AudioShake can handle high-resolution files up to 192kHz, and offers several entry points, including AudioShake Live, Indie and an API for deeper integration.
Another option is Cryo Mix, a suite of tools for music mixing and mastering. It includes an AI Audio Separator to isolate stems like vocals and instruments, and an AI Mixing tool to create a polished sound. The service also offers tools for pitch correction, mastering and album cover creation, so you can produce high-quality audio regardless of your level of music engineering expertise.
You could also try Fadr, a web-based service with a range of AI-powered music tools. That includes a vocal remover, song splitter, tempo, key and chord detector, and tools to create remixes and mashups. Fadr offers basic and advanced pricing tiers, so you can use it regardless of how much audio engineering you know.