API

POST /v1/audio/transcriptions

Upload audio as multipart form-data. Response text is billed in RODI.

POSThttps://api.rodiumai.io/v1/audio/transcriptions

Form parameters

Parameter	Type	Required	Description
file	file	Required	Audio file to transcribe (multipart form field). The whole request must stay under 10 MiB.
model	string	Required	Transcription model id (e.g. openai/gpt-4o-transcribe, openai/gpt-4o-mini-transcribe, google/gemini-2.5-flash).
language	string	Optional	Optional ISO-639-1 language hint (e.g. en, fr).
prompt	string	Optional	Optional text to guide style or spelling of the transcript.
response_format	string	Optional	Output format when supported (e.g. "json", "text", "verbose_json").
chunking_strategy	string	Optional	OpenAI transcription models: chunking for long audio (e.g. "auto"). Forwarded as-is.
temperature	number	Optional	Sampling temperature between 0 and 1 when supported.

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Send multipart/form-data with file and model. Missing fields return 422 with a detail array instead of the usual error envelope.
The whole request, file included, must stay under 10 MiB (413 payload_too_large above). Split or compress longer recordings.
Both Authorization: Bearer and x-api-key are accepted.
language, prompt, response_format, temperature and chunking_strategy are forwarded to the model; the response is the provider's JSON (text, or richer fields with verbose_json).
Billed from the audio and text tokens the provider reports, at the model's price.