Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS
Google has introduced Gemini 3.8 Flash TTS and Gemini 3.8 Flash-Lite TTS, its most expressive audio generation models yet, expanding the Gemini Audio family with tools for creators, developers, and enterprises. The models enable users to design custom voices, replicate existing ones from short samples, and direct scenes line by line across surfaces including Google AI Studio, the Gemini API, Gemini Enterprise, Gemini Notebook, and Google Vids.
Gemini 3.8 Flash TTS is built for creative direction and character design with over 100 languages and access to 2,000+ production-ready voices, while Flash-Lite targets high-volume dubbing and voice agents. On Hume AI's Voice Design Benchmark, Flash TTS took the top spot with 71.4, and both models ranked first and second on the Overall Quality Index, with Flash-Lite also leading in accent modeling at 60.8. Both are rolling out to developers via the Gemini API and AI Studio starting September 23, 2026, with enterprise API access coming soon, while flash is in Gemini Notebook and Flash-Lite in Google Vids. Safety features include a mandatory verbal consent recording for replication, SynthID audio watermarking, and C2PA credentials.