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Orpheus by CanopyLabs is a low-latency text-to-speech model hosted on SLNG infrastructure. It supports 8 English voices and built-in emotion control, letting you shape how the voice sounds without post-processing. Select a voice by passing its voice ID in your request body. Optionally set an emotion to change the delivery style. 
{
  "voice": "tara",
  "prompt": "Hello from SLNG and Orpheus.",
  "emotion": "happy"
}

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Emotion control

Orpheus supports an emotion parameter that changes the delivery style of any voice. When omitted, the voice uses its default neutral tone.
EmotionDescriptionSample
neutralDefault, balanced delivery
happyUpbeat, warm, and positive
sadSubdued, empathetic tone
angryFirm, intense delivery
surprisedExcited, astonished tone

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Voices

VoiceNameSampleGenderAgeLanguageCharacteristicsUse Cases
taraTaraFemaleYoung AdultEnglishWarm, Clear, VersatileCustomer service, IVR, general purpose
leahLeahFemaleYoung AdultEnglishFriendly, Natural, SoftCasual chat, storytelling
jessJessFemaleYoung AdultEnglishEnergetic, Confident, BrightMarketing, announcements
leoLeoMaleYoung AdultEnglishCalm, Professional, SmoothNarration, informational
danDanMaleAdultEnglishAuthoritative, Deep, SteadyCustomer service, IVR
miaMiaFemaleYoung AdultEnglishExpressive, Lively, ApproachableCasual chat, interactive
zacZacMaleYoung AdultEnglishCasual, Relaxed, NaturalCasual chat, gaming
zoeZoeFemaleYoung AdultEnglishCheerful, Warm, EngagingMarketing, storytelling

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