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Google: Gemini 3.1 Flash TTS
google/gemini-3.1-flash-tts-previewspeech
Gemini 3.1 Flash TTS Preview is a text-to-speech model from Google, and a substantial generational step up from Gemini 2.5 Flash TTS. It takes text input and produces audio output. 30 voices, style control inline (e.g. [calm]), 32K context.
Pricing
1K chars
Voice sample
Parameters
inputrequiredvoiceZephyr · Puck · Charon · Kore · Fenrir · Leda · Orus · Aoede · Callirrhoe · Autonoe · Enceladus · Iapetus · Umbriel · Algieba · Despina · Erinome · Algenib · Rasalgethi · Laomedeia · Achernar · Alnilam · Schedar · Gacrux · Pulcherrima · Achird · Zubenelgenubi · Vindemiatrix · Sadachbia · Sadaltager · SulafatHow to use via API
from openai import OpenAIclient = OpenAI(base_url="https://api.mixen.ai/v1", api_key="mxn-...")resp = client.audio.speech.create(model="google/gemini-3.1-flash-tts-preview",voice="Zephyr", # Zephyr, Puck, Charon, Kore, Fenrir...input="Привет! Это Mixen AI.",)resp.stream_to_file("speech.mp3")
