Emotion Control

Overview

Use the <speechify:style> SSML tag to control the emotion of synthesized speech:

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<speak>
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  <speechify:style emotion="cheerful">
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    Great news! Your order has been shipped!
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  </speechify:style>
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</speak>

Pass SSML as the input parameter — the API detects it automatically.

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response = client.tts.audio.speech(
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    input='<speak><speechify:style emotion="cheerful">Great news!</speechify:style></speak>',
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    voice_id="george",
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    audio_format="mp3",
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)

Supported emotions

Tips for best results

• Match text to emotion — “I told you not to do that!” works with angry, not with cheerful
• Keep sentences short — shorter sentences produce stronger emotional expression
• Use punctuation — ! for anger/excitement, ? for uncertainty, ... for hesitation/sadness
• Combine with SSML — pair emotions with <prosody> and <break> for finer control. See SSML docs.

Examples

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<speak>
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  <speechify:style emotion="angry">Stop it! Right now!</speechify:style>
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</speak>