VibeVoice is Microsoft’s open-source 1.5B-parameter neural voice synthesis model capable of generating 90+ minutes of continuous, studio-quality speech. It supports 50+ professional voices, 8 languages, emotional intonation, and offers real-time low-latency TTS processing. Ideal for audiobooks, podcasts, gaming voice acting, and long-form content creation. Free to use, Apache 2.0 licensed