# Jeongeo (정어) — Korean TTS API for creators and game developers > Generate natural Korean speech from text. 10 voices, speed control, unlimited characters > on the paid plan (flat fee — no per-character metering). Auth: X-API-Key header. Free key: POST /signup {"email": "you@example.com"} Docs: /docs · /openapi.json ## Endpoints - GET /voices → voice list + speed_range. GET /voices/{id}/sample → wav preview. - POST /tts/preview {"text": "...", "voice": "F1", "speed": 1.05} → wav bytes. - POST /tts/generate {"lines": [{text, voice, speed}, ...]} → zip of wavs (max 50 lines/req). - GET /account → tier and monthly character usage (free tier: 3,000 chars/month). ## Plans - Free: 3,000 chars/month, 2 voices (F1/M1), fixed speed, commercial use OK with this credit line in the description: "목소리: 정어(正語) — jeongeo.14dimension.com". - Creator $14/mo: unlimited characters & downloads, all 10 voices, speed control, no attribution. API fair-use rate: 30 preview + 6 batch requests/min (plenty for pipelines & game builds). - Pro $35/mo: Creator + team keys + higher API rate (90 preview + 20 batch requests/min). - Embedding Jeongeo inside an app/service (machine traffic at scale): contact admin@14dimension.com. Languages: Korean, English, Japanese, German, French, Spanish, Portuguese, Italian, Russian, Indonesian, Vietnamese and more — GET /voices lists ids; pass "lang" per line. ## Notes - Output is AI-generated speech. Impersonation/deception uses are prohibited. - Sibling products (14Dimension): hyean/cheongmyeong/hwiyeong/myeongpil/sokgi/ongo/gyeongcheong .14dimension.com — each has its own /llms.txt. Site: https://jeongeo.14dimension.com · Contact: admin@14dimension.com