Gemini 3.8 TTS turns 30 seconds of audio into a custom voice
Google’s Gemini 3.8 Flash TTS and Flash-Lite TTS models let you generate speech from more than 2,000 voices or create a custom voice from a 30-second sample, making quick voice prototyping accessible through a browser playground. The API can stage conversations with multiple characters, each assigned a voice and style instructions. In one test, 1m 18s of audio took about 20 seconds to generate and cost 2.74 cents.