Vapi · Schema

FallbackSonioxTranscriber

AIVoiceAgentsRealtimeCPaaS

Properties

Name Type Description
provider string
model string The Soniox model to use for transcription.
language string Single language for transcription as an ISO 639-1 code (e.g., `en`, `es`). For multi-language hints or to enable Soniox auto-detect, use `languages` instead — when `languages` is set (including to an
languages string Language hints sent to Soniox as `language_hints`. Provide `[lang1, lang2, ...]` (ISO 639-1 codes) to bias recognition toward specific languages, or provide an explicit empty array `[]` to enable Soni
languageHintsStrict boolean When `true`, Soniox strictly restricts transcription to the languages in `languages` (or the singular `language` if `languages` is unset). When `false`, Soniox biases toward those languages but still
maxEndpointDelayMs number Maximum delay in milliseconds between when the speaker stops and when the endpoint is detected. Lower values mean faster turn-taking but more false endpoints. Range: 500-3000. Default: 500.
customVocabulary array Custom vocabulary terms to boost recognition accuracy. Useful for brand names, product names, and domain-specific terminology. Maps to Soniox context.terms.
contextGeneral array General context key-value pairs that guide the AI model during transcription. Helps adapt vocabulary to the correct domain, improving accuracy. Recommended: 10 or fewer pairs. Maps to Soniox context.g
View JSON Schema on GitHub

JSON Schema

vapi-fallbacksonioxtranscriber-schema.json Raw ↑
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/FallbackSonioxTranscriber",
  "title": "FallbackSonioxTranscriber",
  "type": "object",
  "properties": {
    "provider": {
      "type": "string",
      "enum": [
        "soniox"
      ]
    },
    "model": {
      "type": "string",
      "enum": [
        "stt-rt-v4"
      ],
      "description": "The Soniox model to use for transcription."
    },
    "language": {
      "type": "string",
      "enum": [
        "aa",
        "ab",
        "ae",
        "af",
        "ak",
        "am",
        "an",
        "ar",
        "as",
        "av",
        "ay",
        "az",
        "ba",
        "be",
        "bg",
        "bh",
        "bi",
        "bm",
        "bn",
        "bo",
        "br",
        "bs",
        "ca",
        "ce",
        "ch",
        "co",
        "cr",
        "cs",
        "cu",
        "cv",
        "cy",
        "da",
        "de",
        "dv",
        "dz",
        "ee",
        "el",
        "en",
        "eo",
        "es",
        "et",
        "eu",
        "fa",
        "ff",
        "fi",
        "fj",
        "fo",
        "fr",
        "fy",
        "ga",
        "gd",
        "gl",
        "gn",
        "gu",
        "gv",
        "ha",
        "he",
        "hi",
        "ho",
        "hr",
        "ht",
        "hu",
        "hy",
        "hz",
        "ia",
        "id",
        "ie",
        "ig",
        "ii",
        "ik",
        "io",
        "is",
        "it",
        "iu",
        "ja",
        "jv",
        "ka",
        "kg",
        "ki",
        "kj",
        "kk",
        "kl",
        "km",
        "kn",
        "ko",
        "kr",
        "ks",
        "ku",
        "kv",
        "kw",
        "ky",
        "la",
        "lb",
        "lg",
        "li",
        "ln",
        "lo",
        "lt",
        "lu",
        "lv",
        "mg",
        "mh",
        "mi",
        "mk",
        "ml",
        "mn",
        "mr",
        "ms",
        "mt",
        "my",
        "na",
        "nb",
        "nd",
        "ne",
        "ng",
        "nl",
        "nn",
        "no",
        "nr",
        "nv",
        "ny",
        "oc",
        "oj",
        "om",
        "or",
        "os",
        "pa",
        "pi",
        "pl",
        "ps",
        "pt",
        "qu",
        "rm",
        "rn",
        "ro",
        "ru",
        "rw",
        "sa",
        "sc",
        "sd",
        "se",
        "sg",
        "si",
        "sk",
        "sl",
        "sm",
        "sn",
        "so",
        "sq",
        "sr",
        "ss",
        "st",
        "su",
        "sv",
        "sw",
        "ta",
        "te",
        "tg",
        "th",
        "ti",
        "tk",
        "tl",
        "tn",
        "to",
        "tr",
        "ts",
        "tt",
        "tw",
        "ty",
        "ug",
        "uk",
        "ur",
        "uz",
        "ve",
        "vi",
        "vo",
        "wa",
        "wo",
        "xh",
        "yi",
        "yue",
        "yo",
        "za",
        "zh",
        "zu"
      ],
      "description": "Single language for transcription as an ISO 639-1 code (e.g., `en`, `es`). For multi-language hints or to enable Soniox auto-detect, use `languages` instead \u2014 when `languages` is set (including to an empty array), this field is ignored when building the Soniox request. Defaults to `en` if neither this nor `languages` is set."
    },
    "languages": {
      "type": "string",
      "enum": [
        "aa",
        "ab",
        "ae",
        "af",
        "ak",
        "am",
        "an",
        "ar",
        "as",
        "av",
        "ay",
        "az",
        "ba",
        "be",
        "bg",
        "bh",
        "bi",
        "bm",
        "bn",
        "bo",
        "br",
        "bs",
        "ca",
        "ce",
        "ch",
        "co",
        "cr",
        "cs",
        "cu",
        "cv",
        "cy",
        "da",
        "de",
        "dv",
        "dz",
        "ee",
        "el",
        "en",
        "eo",
        "es",
        "et",
        "eu",
        "fa",
        "ff",
        "fi",
        "fj",
        "fo",
        "fr",
        "fy",
        "ga",
        "gd",
        "gl",
        "gn",
        "gu",
        "gv",
        "ha",
        "he",
        "hi",
        "ho",
        "hr",
        "ht",
        "hu",
        "hy",
        "hz",
        "ia",
        "id",
        "ie",
        "ig",
        "ii",
        "ik",
        "io",
        "is",
        "it",
        "iu",
        "ja",
        "jv",
        "ka",
        "kg",
        "ki",
        "kj",
        "kk",
        "kl",
        "km",
        "kn",
        "ko",
        "kr",
        "ks",
        "ku",
        "kv",
        "kw",
        "ky",
        "la",
        "lb",
        "lg",
        "li",
        "ln",
        "lo",
        "lt",
        "lu",
        "lv",
        "mg",
        "mh",
        "mi",
        "mk",
        "ml",
        "mn",
        "mr",
        "ms",
        "mt",
        "my",
        "na",
        "nb",
        "nd",
        "ne",
        "ng",
        "nl",
        "nn",
        "no",
        "nr",
        "nv",
        "ny",
        "oc",
        "oj",
        "om",
        "or",
        "os",
        "pa",
        "pi",
        "pl",
        "ps",
        "pt",
        "qu",
        "rm",
        "rn",
        "ro",
        "ru",
        "rw",
        "sa",
        "sc",
        "sd",
        "se",
        "sg",
        "si",
        "sk",
        "sl",
        "sm",
        "sn",
        "so",
        "sq",
        "sr",
        "ss",
        "st",
        "su",
        "sv",
        "sw",
        "ta",
        "te",
        "tg",
        "th",
        "ti",
        "tk",
        "tl",
        "tn",
        "to",
        "tr",
        "ts",
        "tt",
        "tw",
        "ty",
        "ug",
        "uk",
        "ur",
        "uz",
        "ve",
        "vi",
        "vo",
        "wa",
        "wo",
        "xh",
        "yi",
        "yue",
        "yo",
        "za",
        "zh",
        "zu"
      ],
      "description": "Language hints sent to Soniox as `language_hints`. Provide `[lang1, lang2, ...]` (ISO 639-1 codes) to bias recognition toward specific languages, or provide an explicit empty array `[]` to enable Soniox auto-detect across all 60+ supported languages. When set (including the empty array), this field takes precedence over the singular `language` field. When omitted, falls back to the singular `language` (which defaults to `en` if also unset). Best accuracy is achieved with a single language."
    },
    "languageHintsStrict": {
      "type": "boolean",
      "description": "When `true`, Soniox strictly restricts transcription to the languages in `languages` (or the singular `language` if `languages` is unset). When `false`, Soniox biases toward those languages but still allows transcription in other languages. Has no effect when no language hints are sent (e.g., `languages: []` for auto-detect). Defaults to `true` (strict mode)."
    },
    "maxEndpointDelayMs": {
      "type": "number",
      "minimum": 500,
      "maximum": 3000,
      "description": "Maximum delay in milliseconds between when the speaker stops and when the endpoint is detected. Lower values mean faster turn-taking but more false endpoints. Range: 500-3000. Default: 500."
    },
    "customVocabulary": {
      "description": "Custom vocabulary terms to boost recognition accuracy. Useful for brand names, product names, and domain-specific terminology. Maps to Soniox context.terms.",
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "contextGeneral": {
      "description": "General context key-value pairs that guide the AI model during transcription. Helps adapt vocabulary to the correct domain, improving accuracy. Recommended: 10 or fewer pairs. Maps to Soniox context.general.",
      "example": [
        {
          "key": "domain",
          "value": "Healthcare"
        },
        {
          "key": "topic",
          "value": "Diabetes management consultation"
        }
      ],
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/SonioxContextGeneralItem"
      }
    }
  },
  "required": [
    "provider"
  ]
}