Gemini 3.8 TTS Playground

Summary

A browser-based playground lets users test Google's Gemini 3.8 text-to-speech API, composing single-voice or multi-speaker narration and saving settings to shareable URLs. Google released the gemini-3.8-flash-tts and gemini-3.8-flash-lite-tts models with over 2,000 voices and custom voice creation from a 30-second sample. The author built the bring-your-own-key interface with GPT-6 Astra, relying on the Gemini API's open CORS policy.

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