{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ChatCompletionResponseStreamChoice",
  "title": "ChatCompletionResponseStreamChoice",
  "additionalProperties": false,
  "properties": {
    "index": {
      "title": "Index",
      "type": "integer",
      "description": "The index of this choice in the list of choices."
    },
    "delta": {
      "$ref": "#/components/schemas/DeltaMessage",
      "description": "The delta content for streaming responses."
    },
    "logprobs": {
      "default": null,
      "description": "Log probability information for the choice.",
      "$ref": "#/components/schemas/ChatCompletionLogProbs"
    },
    "finish_reason": {
      "default": null,
      "title": "Finish Reason",
      "description": "The reason the model stopped generating: `stop` (natural stop or stop sequence), `length` (max tokens reached), or `tool_calls` (model called a tool).",
      "type": "string"
    },
    "stop_reason": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "string"
        }
      ],
      "default": null,
      "title": "Stop Reason",
      "description": "The specific stop sequence or token ID that caused generation to stop."
    }
  },
  "required": [
    "index",
    "delta"
  ],
  "type": "object",
  "description": "A choice in the chat completion response."
}