{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "#/components/schemas/FallbackCartesiaVoice",
"title": "FallbackCartesiaVoice",
"type": "object",
"properties": {
"cachingEnabled": {
"type": "boolean",
"description": "This is the flag to toggle voice caching for the assistant.",
"example": true,
"default": true
},
"provider": {
"type": "string",
"description": "This is the voice provider that will be used.",
"enum": [
"cartesia"
]
},
"voiceId": {
"type": "string",
"description": "The ID of the particular voice you want to use."
},
"model": {
"type": "string",
"description": "This is the model that will be used. This is optional and will default to the correct model for the voiceId.",
"enum": [
"sonic-3",
"sonic-3-2026-01-12",
"sonic-3-2025-10-27",
"sonic-2",
"sonic-2-2025-06-11",
"sonic-english",
"sonic-multilingual",
"sonic-preview",
"sonic"
],
"example": "sonic-english"
},
"language": {
"type": "string",
"description": "This is the language that will be used. This is optional and will default to the correct language for the voiceId.",
"enum": [
"ar",
"bg",
"bn",
"cs",
"da",
"de",
"el",
"en",
"es",
"fi",
"fr",
"gu",
"he",
"hi",
"hr",
"hu",
"id",
"it",
"ja",
"ka",
"kn",
"ko",
"ml",
"mr",
"ms",
"nl",
"no",
"pa",
"pl",
"pt",
"ro",
"ru",
"sk",
"sv",
"ta",
"te",
"th",
"tl",
"tr",
"uk",
"vi",
"zh"
],
"example": "en"
},
"experimentalControls": {
"description": "Experimental controls for Cartesia voice generation",
"allOf": [
{
"$ref": "#/components/schemas/CartesiaExperimentalControls"
}
]
},
"generationConfig": {
"description": "Generation config for fine-grained control of sonic-3 voice output (speed, volume, and experimental controls). Only available for sonic-3 model.",
"allOf": [
{
"$ref": "#/components/schemas/CartesiaGenerationConfig"
}
]
},
"pronunciationDictId": {
"type": "string",
"description": "Pronunciation dictionary ID for sonic-3. Allows custom pronunciations for specific words. Only available for sonic-3 model.",
"example": "dict_abc123"
},
"chunkPlan": {
"description": "This is the plan for chunking the model output before it is sent to the voice provider.",
"allOf": [
{
"$ref": "#/components/schemas/ChunkPlan"
}
]
}
},
"required": [
"provider",
"voiceId"
]
}