AI 번역: 다국어 콘텐츠 자동화

[AI (Claude·GPT-4)]
- 비용: 글당 $0.5~2
- 속도: 1분
- 품질: 좋음 (90% 자연스러움)
- 검토 필수

[사람 번역]
- 비용: 글당 $50~200
- 속도: 1~2일
- 품질: 매우 좋음 (95%+)
- 빠르게 안 됨

[AI + 사람 검토]
- 비용: $5~20 (편집비)
- 속도: 30분~2시간
- 품질: 95%
- → 가장 좋은 ROI

async function translate(text: string, target: 'en' | 'ja' | 'zh') {
  const result = await generateText({
    model: anthropic('claude-sonnet-4-6'),
    system: `You are an expert translator specializing in marketing and tech content.

Goals:
- Sound NATIVE, not translated
- Preserve meaning, NOT structure
- Adapt cultural references
- Keep technical terms accurate

Tone: Same as original (formal/casual)`,
    prompt: `Translate from Korean to ${target === 'en' ? 'English' : target === 'ja' ? 'Japanese' : 'Chinese'}:

${text}

Important:
- Preserve markdown formatting
- Keep code blocks unchanged
- Translate alt text
- Adapt examples if culturally specific`,
  });

  return result.text;
}

// app/[lang]/layout.tsx
const LANGS = ['ko', 'en', 'ja', 'zh'];

export async function generateStaticParams() {
  return LANGS.map(lang => ({ lang }));
}


// 콘텐츠
// content/posts/{slug}.{lang}.md
// posts/ai-startup.ko.md
// posts/ai-startup.en.md
// posts/ai-startup.ja.md
// posts/ai-startup.zh.md


// 자동 번역 파이프라인
async function translateAllPosts() {
  const koreanPosts = await glob('content/posts/*.ko.md');

  for (const koPath of koreanPosts) {
    const content = await fs.readFile(koPath, 'utf-8');

    for (const lang of ['en', 'ja', 'zh']) {
      const targetPath = koPath.replace('.ko.md', `.${lang}.md`);
      if (fs.existsSync(targetPath)) continue;

      const translated = await translate(content, lang);
      await fs.writeFile(targetPath, translated);
    }
  }
}

<!-- 다국어 SEO -->
<link rel="alternate" hreflang="ko" href="https://example.com/ko/post" />
<link rel="alternate" hreflang="en" href="https://example.com/en/post" />
<link rel="alternate" hreflang="ja" href="https://example.com/ja/post" />
<link rel="alternate" hreflang="zh" href="https://example.com/zh/post" />
<link rel="alternate" hreflang="x-default" href="https://example.com/en/post" />


<!-- Next.js metadata -->
export async function generateMetadata({ params }) {
  return {
    alternates: {
      languages: {
        'ko': '/ko/' + slug,
        'en': '/en/' + slug,
        'ja': '/ja/' + slug,
        'zh': '/zh/' + slug,
      },
    },
  };
}

번역만 X — 문화 맞춤:

[금액]
- 한국: ₩10,000
- 미국: $7.99
- 일본: ¥1,000
- 중국: ¥50

[날짜]
- 한국: 2026년 4월 29일
- 미국: April 29, 2026
- 일본: 2026年4月29日

[예시]
- 한국 사례 → 미국은 Apple·Google
- 한국 회사명 → 영어로 unfamiliar

[유머·관용구]
- "초딩같다" → 영어로 직역 X
- "low-quality" 같은 자연스러운 표현

async function validateTranslation(original: string, translated: string, lang: string) {
  // 번역본을 다시 한국어로
  const backTranslated = await translate(translated, 'ko');

  // 의미 비교
  const result = await generateObject({
    model: anthropic('claude-sonnet-4-6'),
    schema: z.object({
      meaningPreserved: z.boolean(),
      issues: z.array(z.string()),
      suggestion: z.string().optional(),
    }),
    prompt: `Compare original and back-translation. Are they semantically equivalent?

Original: ${original}
Back-translation: ${backTranslated}

Check for:
- Lost nuances
- Added information
- Cultural mismatches`,
  });

  return result.object;
}

한국 → 영어·일·중 (글 30편)
- AI 번역: $30 × 3 = $90
- 사람 검수: $50 × 3 = $150

총: $240 (vs 100% 사람 = $4,500)
→ 95% 절감