Opus is a totally open, royalty-free, highly versatile audio codec. Developed by IETF codec working group
License: Open Source
Apple Lossless is a lossless audio format ideal for high-quality audio preservation, while Opus is a versatile lossy codec focused on efficient streaming and smaller file sizes. The key difference lies in Apple Lossless's commitment to audio fidelity versus Opus's emphasis on efficient compression and adaptability.