Gemini 3.8 TTS Playground

Summary by Cyber Security News23 Sep 2026, 19:12 CEST

About this summary. This is a short, independently written summary of an article first published by Simon Willison. Cyber Security News did not report or verify the underlying story. Read the original: https://simonwillison.net/2026/Sep/23/gemini-tts-playground/

Tool: Gemini 3.8 TTS Playground Google released two new Gemini text-to-speech models today - gemini-3.8-flash-tts and gemini-3.8-flash-lite-tts. They come with a library of over 2,000 voices, plus the ability to create a custom voice with "just a 30-second audio sample of your voice or a voice you have the rights to use". I vibe coded this bring-your-own-key playground interface with GPT-6 Astra, taking advantage of the open CORS policy of the underlying Gemini API.

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