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Gemini 3.8 text-to-speech

330 points · 152 comments · swolpers

  1. simonw · · focus · HN ↗
    I vibe coded a playground UI for trying this out. The conversation mode is neat, and it's very expensive - most of my experiments have cost less than a cent.

    <a href="https:&#x2F;&#x2F;tools.simonwillison.net&#x2F;gemini-tts-playground#compose=%7B%22v%22%3A1%2C%22mode%22%3A%22single%22%2C%22model%22%3A%22gemini-3.8-flash-tts%22%2C%22single%22%3A%7B%22voice%22%3A%22Kore%22%2C%22style%22%3A%22cheerful%20and%20friendly%22%2C%22text%22%3A%22Have%20a%20wonderful%20day!%22%7D%2C%22speakers%22%3A%5B%7B%22id%22%3A1%2C%22name%22%3A%22Joe%22%2C%22voice%22%3A%22Puck%22%7D%2C%7B%22id%22%3A2%2C%22name%22%3A%22Jane%22%2C%22voice%22%3A%22Kore%22%7D%5D%2C%22turns%22%3A%5B%7B%22speaker%22%3A1%2C%22text%22%3A%22How&#x27;s%20it%20going%20today%20Jane%3F%22%2C%22style%22%3A%22cheerful%20and%20friendly%22%7D%2C%7B%22speaker%22%3A2%2C%22text%22%3A%22Not%20too%20bad%2C%20how%20about%20you%3F%20Ready%20to%20test%20these%20new%20voices%3F%22%2C%22style%22%3A%22calm%20and%20relaxed%22%7D%5D%7D" rel="nofollow">https:&#x2F;&#x2F;tools.simonwillison.net&#x2F;gemini-tts-playground#compos...

    1. mohsen1 · · focus · HN ↗
      Why tho? AI Studio has this model available and I don&#x27;t need to paste the API key anywhere

      <a href="https:&#x2F;&#x2F;aistudio.google.com&#x2F;generate-speech?model=gemini-3.8-flash-tts" rel="nofollow">https:&#x2F;&#x2F;aistudio.google.com&#x2F;generate-speech?model=gemini-3.8...

      1. simonw · · focus · HN ↗
        Because building my own is a better way to understand the capabilities of the model and how to use it - and to verify that it can be used via CORS.
        1. CyberDildonics · · focus · HN ↗
          Did you &#x27;build&#x27; it or did you vibe code it?
          1. simonw · · focus · HN ↗
            Bit of both. I define &quot;vibe coding&quot; as building without looking at the code at all. For this one I was reading the code to understand how it works, and I then followed up several times to adjust how it was working.

            Full session here: <a href="https:&#x2F;&#x2F;tools.simonwillison.net&#x2F;markdown-svg-renderer?url=https%3A%2F%2Fgist.github.com%2Fsimonw%2Fa82f3aef2677c623d1776092d6b21224" rel="nofollow">https:&#x2F;&#x2F;tools.simonwillison.net&#x2F;markdown-svg-renderer?url=ht...

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