Unexpected field name timestamp_granularities[]

[kayhantolga]

Does this field name really include [], or is it a mistake?

CreateTranscriptionRequest:
      type: object
      additionalProperties: false
      properties:
        file:
          description: |
            The audio file object (not file name) to transcribe, in one of these formats: flac, mp3, mp4, mpeg, mpga, m4a, ogg, wav, or webm.
          type: string
          x-oaiTypeLabel: file
          format: binary
        model:
          description: |
            ID of the model to use. Only `whisper-1` (which is powered by our open source Whisper V2 model) is currently available.
          example: whisper-1
          anyOf:
            - type: string
            - type: string
              enum: ["whisper-1"]
          x-oaiTypeLabel: string
        language:
          description: |
            The language of the input audio. Supplying the input language in [ISO-639-1](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes) format will improve accuracy and latency.
          type: string
        prompt:
          description: |
            An optional text to guide the model's style or continue a previous audio segment. The [prompt](/docs/guides/speech-to-text/prompting) should match the audio language.
          type: string
        response_format:
          description: |
            The format of the transcript output, in one of these options: `json`, `text`, `srt`, `verbose_json`, or `vtt`.
          type: string
          enum:
            - json
            - text
            - srt
            - verbose_json
            - vtt
          default: json
        temperature:
          description: |
            The sampling temperature, between 0 and 1. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. If set to 0, the model will use [log probability](https://en.wikipedia.org/wiki/Log_probability) to automatically increase the temperature until certain thresholds are hit.
          type: number
          default: 0
===>timestamp_granularities[]:<=============================
          description: |
            The timestamp granularities to populate for this transcription. `response_format` must be set `verbose_json` to use timestamp granularities. Either or both of these options are supported: `word`, or `segment`. Note: There is no additional latency for segment timestamps, but generating word timestamps incurs additional latency.
          type: array
          items:
            type: string
            enum:
              - word
              - segment
          default: [segment]
      required:
        - file
        - model