1,000+ new AI voices in 28 accents: English, French, Spanish, German, Portuguese

Gradium has added more than 1,000 AI voices to its catalog, expanding it from about 380 to 1,421 voices across English, Spanish, French, German, and Portuguese, with coverage for 28 accents and four use cases: customer service, narration, advertising and social media, and character performances. The release emphasizes improved naturalness and expressivity, with listener preference tests indicating that newly recommended customer-service voices generally outperformed previous flagship options; existing voices remain available to preserve current integrations. Voices were created through a voice-design model, screened from roughly 16,000 candidates by automated assessments for qualities such as audio quality, pacing, expressiveness, and accent, then evaluated by native listeners. The catalog includes 256 customer-service voices, 221 narration voices, 228 advertising and social-media voices, and 329 character voices, with Spanish receiving the largest language expansion. Users can filter voices in the studio by attributes including language, accent, gender, age, and use case, or use voice IDs in text-to-speech API requests. Future work will focus on more granular regional and city-level accents, with human listener evaluations continuing to determine which voices are released.

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