Korea AI Basic Act: 30M won fine and a Korean-ad label

A secondary source says Korea's AI Basic Act has a grace period through January 2027 and fines of up to KRW 30 million. Sume's korean-ad caption style is a look for Korean speech, not a legal label; if you need an on-screen AI notice, burn it as authored overlay text, in a Hangul style, and confirm the wording with counsel.

What the source reports

This is a secondary summary, not the statute text. Read the Act and its enforcement decree, and ask a Korean lawyer, before relying on it.

What korean-ad is, and is not

korean-ad is a CapCut-style Hangul karaoke caption: one short phrase at a time in the lower third, with the spoken word shifting to a heavy weight. Pair it with language: "ko". It styles speech that is actually in the video.

It does not insert a disclosure, and Sume docs do not describe it as one. Sume's caption docs also say that Korean text sent to the Latin styles slam, punch or tiktok-green is rejected with caption_hangul_text_latin_style, so use a Hangul style for Korean copy.

Burn an authored notice

Standalone video captions accept cues or segments with text, start and end, which burn authored overlay copy without speech-to-text. That is the mechanism for a fixed on-screen line. The notice text below is a placeholder; use the wording your legal advisers approve.

Check the burned result on a device before you publish, and keep the job id with your records.

curl -X POST https://api.sume.com/v1/video-captions \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: ko-notice-001" \
  -d '{
    "video_url": "https://example.com/ad.mp4",
    "style": "black-outline",
    "language": "ko",
    "cues": [
      { "text": "이 영상은 AI로 제작되었습니다", "start": 0, "end": 3 }
    ]
  }'