VibeVoice turns scripts into natural-sounding conversations with several AI voices. It uses Microsoft's VibeVoice text-to-speech technology, which is designed for long-form audio with smooth back-and-forth between speakers.
You write a podcast script, assign up to four speakers from a set of English and Chinese voices, and generate the audio. Some voices include background music, and a random prompt option helps you get started. It is listed as free.