Language code: th

Thai speech-to-text API (ไทย)

KolWrite transcribes Thai audio and video with one API call: send "language": "th" and get Thai script in timed segments with speaker labels, as JSON, TXT or SRT. Oracle models translate Thai into English or 99 other languages.

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Transcribe Thai with one request

Set language to th 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-th.m4a", "model": "oracle", "language": "th", "include_diarization": true, "output_format": "json"}'

Translate Thai 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-th.m4a", "model": "oracle_mini", "language": "th", "translate_to": "en", "output_format": "srt"}'

Thai at a glance

PropertyDetails
API codeth
Native nameไทย
Writing directionLeft to right
Automatic detectionYes: omit language or send "auto"
Translate Thai audio intoAny of the 100 supported languages, on Oracle models
Translate other languages into ThaiYes: translate_to: "th" on Oracle models
OutputJSON (segments, word timings, speakers), TXT, SRT
PriceUS$0.48 (Base) to US$3.60 (Oracle Max) per audio hour; US$1.44 on Oracle

What to know about Thai transcription

  • Thai is written without spaces between words; spaces mark phrase or sentence breaks. Timed units may not match dictionary words, so cut subtitles by time.
  • For search or keyword spotting, run a Thai word segmenter on the transcript first.
  • Thai speech uses polite particles (ครับ, ค่ะ) that appear in the transcript as spoken.

Where teams use Thai transcription

  • Thai video subtitles and translated subtitles.
  • Customer calls and meetings for companies in Thailand.
  • Tourism and hospitality interviews translated with translate_to: "en".

Choosing a model

Start with oracle (US$1.44 per hour) for production Thai 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 Thai accuracy figure for this API, so test a sample of your own recordings before committing. Full comparison: models and prices.

Questions and answers

How do I search Thai transcripts?

Segment the text into words first, since Thai has no spaces between words.

Can I translate Thai audio to English?

Yes, with an Oracle model and translate_to: "en".

Which subtitle format is available?

SRT, via output_format: "srt".

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