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Wizper (Whisper v3)

POST/v1/run

Wizper by OpenAI - accurate speech-to-text transcription with AI. Convert audio and video to text with high accuracy, multilingual support, and speaker identification.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to openai/wizper.

Default: openai/wizper

Optional<string>audio

URL of the audio file to transcribe. Supported formats: mp3, mp4, mpeg, mpga, m4a, wav or webm.

Optional<string>task

Task to perform on the audio file. Either transcribe or translate.

Allowed values: transcribe, translate

Default: transcribe

Optional<string>chunk_level

Level of the chunks to return.

Default: segment

Optional<integer>max_segment_len

Maximum speech segment duration in seconds before splitting.

Range: 10 to 29

Default: 29

Optional<string>language

Language of the audio file. If translate is selected as the task, the audio will be translated to English, regardless of the language selected. If `None` is passed, the language will be automatically detected. This will also increase the inference time.

Allowed values: af, am, ar, as, az, ba, be, bg, bn, bo, br, bs, ca, cs, cy, da, de, el, en, es, et, eu, fa, fi, fo, fr, gl, gu, ha, haw, he, hi, hr, ht, hu, hy, id, is, it, ja, jw, ka, kk, km, kn, ko, la, lb, ln, lo, lt, lv, mg, mi, mk, ml, mn, mr, ms, mt, my, ne, nl, nn, no, oc, pa, pl, ps, pt, ro, ru, sa, sd, si, sk, sl, sn, so, sq, sr, su, sv, sw, ta, te, tg, th, tk, tl, tr, tt, uk, ur, uz, vi, yi, yo, zh

Default: en

Optional<string>version

Version of the model to use. All of the models are the Whisper large variant.

Default: 3

Optional<boolean>merge_chunks

Whether to merge consecutive chunks. When enabled, chunks are merged if their combined duration does not exceed max_segment_len.

Default: true

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

Allowed values: pending, running, completed, failed, timeout

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: speech-to-text

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async