[WithinReason]

Doesn't DeepL use an LLM? At least based on the company name that's what I would assume

[numpad0]

It is(at least was) pre-LLM deep learning NLP. So was Google Translate, and those two as well as LLMs all has their unique forte and failure modes.

[dbbk]

Sometimes: https://support.deepl.com/hc/en-us/articles/14241705319580-N...