Korean speech-to-text API (한국어)

Transcribe Korean with one request

Set language to ko and start a job. Poll GET /transcribe/{jobId} for the result, or pass a webhook_url.

curl https://app.kolwrite.com/transcribe \
  -H "x-api-key: $KOLWRITE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"audio_url": "https://example.com/meeting-ko.m4a", "model": "oracle", "language": "ko", "include_diarization": true, "output_format": "json"}'

Translate Korean audio into English in the same job (Oracle models only):

curl https://app.kolwrite.com/transcribe \
  -H "x-api-key: $KOLWRITE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"audio_url": "https://example.com/meeting-ko.m4a", "model": "oracle_mini", "language": "ko", "translate_to": "en", "output_format": "srt"}'

Korean at a glance

What to know about Korean transcription

• Korean spacing rules are often applied loosely in everyday writing. Compare transcripts with references after removing spaces, or you will over-count errors.
• Korean speech carries many English loanwords written in Hangul; brand names may appear in Hangul or Latin letters.
• Speech levels (formal and informal endings) are transcribed as spoken; the API does not rewrite register.

Where teams use Korean transcription

• Korean video and entertainment subtitles, including translated subtitles.
• Customer calls and meetings for companies in Korea.
• Interviews and focus groups translated with translate_to: "en".

Choosing a model

Start with oracle (US$1.44 per hour) for production Korean audio. Use base (US$0.48) for clean, single-speaker recordings at volume, oracle_mini (US$0.96) for the cheapest translation, and oracle_pro or oracle_max for noisy or difficult audio. KolWrite does not publish a Korean accuracy figure for this API, so test a sample of your own recordings before committing. Full comparison: models and prices.

Questions and answers