Translation API — multilingual + JP keigo registers

Translation API for AI agents and back-office automation — accurate translation across CJK and European languages, with a real differentiator for Japanese: keigo / formality registers (敬語 / 丁寧語 / タメ口) you can pick per call.

What you get

• — single text, language name or ISO code, optional formality.
• — array of texts, one target language, returned in order.
• — ISO code + English name for any input.
• OpenRouter-backed under the hood — no model keys to manage on your side.
• Audit log per call (no translation content retained).

Why it's not a wrapper around Google Translate — Japanese keigo register is a first-class parameter; generic MT either ignores it or gets it wrong in business contexts.

Plans

• Starter — $9 / mo, 100,000 characters included, $0.0001/char overage.
• Pro — $29 / mo, 1,000,000 characters included, $0.00005/char overage (half the Starter rate).

Interactive Swagger docs at api-translate.knowlez.com/docs.