[magpi3]

I have no idea, but yiyan is short for wenxinyiyan（文心一言), which roughly translates to character-heart-one-(speech/word). Maybe someone who is Chinese could translate it better. So I don't think the name has anything to do with the model.

I do wonder what their backend is. They have the same 3.5/4 version numbering scheme that ChatGPT uses, which could be just marketing (and probably is), but I wonder.

EDIT: fixed my translation

[nanmu42]

Their backend originates from Baidu ERNIE: http://research.baidu.com/Blog/index-view?id=160

[antonvs]

“A single word from the heart”