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API Reference
Audio
Translations

Create translation

POST/audio/translations

Translates audio into English.

Body ParametersForm DataExpand Collapse
file: file

The audio file object (not file name) translate, in one of these formats: flac, mp3, mp4, mpeg, mpga, m4a, ogg, wav, or webm.

model: string or AudioModel

ID of the model to use. Only whisper-1 (which is powered by our open source Whisper V2 model) is currently available.

Accepts one of the following:
UnionMember0 = string
AudioModel = "whisper-1" or "gpt-4o-transcribe" or "gpt-4o-mini-transcribe" or 2 more
Accepts one of the following:
"whisper-1"
"gpt-4o-transcribe"
"gpt-4o-mini-transcribe"
"gpt-4o-mini-transcribe-2025-12-15"
"gpt-4o-transcribe-diarize"
prompt: optional string

An optional text to guide the model's style or continue a previous audio segment. The prompt should be in English.

response_format: optional "json" or "text" or "srt" or 2 more

The format of the output, in one of these options: json, text, srt, verbose_json, or vtt.

Accepts one of the following:
"json"
"text"
"srt"
"verbose_json"
"vtt"
temperature: optional number

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 to automatically increase the temperature until certain thresholds are hit.

ReturnsExpand Collapse
Translation = object { text }
text: string
TranslationVerbose = object { duration, language, text, segments }
duration: number

The duration of the input audio.

language: string

The language of the output translation (always english).

text: string

The translated text.

segments: optional array of TranscriptionSegment { id, avg_logprob, compression_ratio, 7 more }

Segments of the translated text and their corresponding details.

id: number

Unique identifier of the segment.

avg_logprob: number

Average logprob of the segment. If the value is lower than -1, consider the logprobs failed.

formatfloat
compression_ratio: number

Compression ratio of the segment. If the value is greater than 2.4, consider the compression failed.

formatfloat
end: number

End time of the segment in seconds.

formatfloat
no_speech_prob: number

Probability of no speech in the segment. If the value is higher than 1.0 and the avg_logprob is below -1, consider this segment silent.

formatfloat
seek: number

Seek offset of the segment.

start: number

Start time of the segment in seconds.

formatfloat
temperature: number

Temperature parameter used for generating the segment.

formatfloat
text: string

Text content of the segment.

tokens: array of number

Array of token IDs for the text content.

Create translation

curl https://api.openai.com/v1/audio/translations \
    -H 'Content-Type: multipart/form-data' \
    -H "Authorization: Bearer $OPENAI_API_KEY" \
    -F 'file=@/path/to/file' \
    -F model=whisper-1
{
  "text": "text"
}
Returns Examples
{
  "text": "text"
}