feat(openapi): add support for Hume AI voices and GPT-4.5-preview model

fern/apis/api/openapi.json

@@ -6197,11 +6197,12 @@
           },
           "sipVerb": {
             "type": "object",
-            "description": "This specifies the SIP verb to use while transferring the call.\n- 'refer': Uses SIP REFER to transfer the call (default)\n- 'bye': Ends current call with SIP BYE",
+            "description": "This specifies the SIP verb to use while transferring the call.\n- 'refer': Uses SIP REFER to transfer the call (default)\n- 'bye': Ends current call with SIP BYE\n- 'dial': Uses SIP DIAL to transfer the call",
             "default": "refer",
             "enum": [
               "refer",
-              "bye"
+              "bye",
+              "dial"
             ]
           },
           "twiml": {
@@ -7522,6 +7523,7 @@
             "type": "string",
             "description": "This is the OpenAI model that will be used.",
             "enum": [
+              "gpt-4.5-preview",
               "chatgpt-4o-latest",
               "o3-mini",
               "o1-preview",
@@ -7555,6 +7557,7 @@
             "type": "array",
             "description": "These are the fallback models that will be used if the primary model fails. This shouldn't be specified unless you have a specific reason to do so. Vapi will automatically find the fastest fallbacks that make sense.",
             "enum": [
+              "gpt-4.5-preview",
               "chatgpt-4o-latest",
               "o3-mini",
               "o1-preview",
@@ -7590,6 +7593,7 @@
             "items": {
               "type": "string",
               "enum": [
+                "gpt-4.5-preview",
                 "chatgpt-4o-latest",
                 "o3-mini",
                 "o1-preview",
@@ -8605,6 +8609,10 @@
                   "$ref": "#/components/schemas/FallbackCartesiaVoice",
                   "title": "Cartesia"
                 },
+                {
+                  "$ref": "#/components/schemas/FallbackHumeVoice",
+                  "title": "Hume"
+                },
                 {
                   "$ref": "#/components/schemas/FallbackCustomVoice",
                   "title": "CustomVoice"
@@ -9958,6 +9966,51 @@
           "voiceId"
         ]
       },
+      "FallbackHumeVoice": {
+        "type": "object",
+        "properties": {
+          "provider": {
+            "type": "string",
+            "description": "This is the voice provider that will be used.",
+            "enum": [
+              "hume"
+            ]
+          },
+          "model": {
+            "type": "string",
+            "description": "This is the model that will be used.",
+            "enum": [
+              "octave"
+            ],
+            "example": "octave"
+          },
+          "voiceId": {
+            "type": "string",
+            "description": "The ID of the particular voice you want to use."
+          },
+          "isCustomHumeVoice": {
+            "type": "boolean",
+            "description": "Indicates whether the chosen voice is a preset Hume AI voice or a custom voice.",
+            "example": false
+          },
+          "description": {
+            "type": "string",
+            "description": "Natural language instructions describing how the synthesized speech should sound, including but not limited to tone, intonation, pacing, and accent (e.g., 'a soft, gentle voice with a strong British accent').\n\nIf a Voice is specified in the request, this description serves as acting instructions.\nIf no Voice is specified, a new voice is generated based on this description."
+          },
+          "chunkPlan": {
+            "description": "This is the plan for chunking the model output before it is sent to the voice provider.",
+            "allOf": [
+              {
+                "$ref": "#/components/schemas/ChunkPlan"
+              }
+            ]
+          }
+        },
+        "required": [
+          "provider",
+          "voiceId"
+        ]
+      },
       "FallbackElevenLabsVoice": {
         "type": "object",
         "properties": {
@@ -14579,6 +14632,7 @@
               "pipeline-error-neets-voice-failed",
               "pipeline-error-smallest-ai-voice-failed",
               "pipeline-error-neuphonic-voice-failed",
+              "pipeline-error-hume-voice-failed",
               "pipeline-error-deepgram-transcriber-failed",
               "pipeline-error-gladia-transcriber-failed",
               "pipeline-error-speechmatics-transcriber-failed",
@@ -24288,12 +24342,12 @@
           "minutesIncluded": {
             "type": "number",
             "description": "The number of minutes included in the subscription.",
-            "minimum": 1
+            "minimum": 0
           },
           "minutesUsed": {
             "type": "number",
             "description": "The number of minutes used in the subscription.",
-            "minimum": 1
+            "minimum": 0
           },
           "minutesUsedNextResetAt": {
             "format": "date-time",
@@ -24656,6 +24710,7 @@
               "cartesia",
               "custom-voice",
               "deepgram",
+              "hume",
               "lmnt",
               "neets",
               "neuphonic",
@@ -25348,6 +25403,7 @@
               "cartesia",
               "custom-voice",
               "deepgram",
+              "hume",
               "lmnt",
               "neets",
               "neuphonic",
@@ -25365,6 +25421,7 @@
                 "cartesia",
                 "custom-voice",
                 "deepgram",
+                "hume",
                 "lmnt",
                 "neets",
                 "neuphonic",
@@ -26622,6 +26679,7 @@
               "pipeline-error-neets-voice-failed",
               "pipeline-error-smallest-ai-voice-failed",
               "pipeline-error-neuphonic-voice-failed",
+              "pipeline-error-hume-voice-failed",
               "pipeline-error-deepgram-transcriber-failed",
               "pipeline-error-gladia-transcriber-failed",
               "pipeline-error-speechmatics-transcriber-failed",
@@ -27426,6 +27484,7 @@
               "pipeline-error-neets-voice-failed",
               "pipeline-error-smallest-ai-voice-failed",
               "pipeline-error-neuphonic-voice-failed",
+              "pipeline-error-hume-voice-failed",
               "pipeline-error-deepgram-transcriber-failed",
               "pipeline-error-gladia-transcriber-failed",
               "pipeline-error-speechmatics-transcriber-failed",