Are Kaspa's online, KDX, CLI, and paper wallets compatible with each other?

Kaspa wallets can all send and receive KAS to each other, but online and KDX wallets cannot currently import a seed phrase created by the CLI or paper wallet, and vice versa. The key difference is the seed phrase length: online and KDX wallets use a 12-word seed phrase, while CLI and paper wallets use a 24-word seed phrase. This means if you back up one wallet type and try to restore it in a different type, the import will fail — your seed phrase simply won't be recognized. The practical takeaway is to keep track of which wallet type you used when you first created your wallet, because you must restore it in the same type or one that shares its seed format.