Sonantic

Sonantic (now part of Spotify) specialized in creating incredibly expressive, performance-driven AI voices capable of conveying complex human emotions like fear, joy, and tenderness. Its technology was built for high-stakes applications in film, gaming, and entertainment, where emotional authenticity is critical. The platform offered professional-grade editing tools to fine-tune every nuance of a performance. Although its standalone future is integrated into Spotify, its legacy and demonstrated capability in pushing the boundaries of emotional AI voice synthesis earn it a place on this list for its groundbreaking work in performance TTS for creative industries.