Summary & Key Takeaways ​

• Simon Willison created a playground for Google's new Gemini 3.8 TTS models.
• The playground allows users to experiment with Flash TTS and Flash-Lite TTS.
• It highlights features like custom voices and multi-character conversations.
• The tool provides an accessible way to test the latest text-to-speech capabilities.

Our Commentary ​

Simon Willison is always quick to build these kinds of practical tools. A playground for Gemini 3.8 TTS, especially with custom voices and multi-character conversations, is incredibly useful. It's one thing to read about a new model, another to play with it directly.