Possibly, if it's a strictly formulated medical, business, or legal document (but if it's a medical, business, or legal document, being right 99% of the time is

Possibly, if it's a strictly formulated medical, business, or legal document (but if it's a medical, business, or legal document, being right 99% of the time isn't good enough!). Google Translate could already do that much, incidentally. If it's not a formal document - if it's anything vaguely resembling casual speech or literary writing - an LLM will butcher it in all kinds of ways no matter how much context it has.