Hi @philschmid ,
Thank you for the reply!  I check all three approaches :
1 The inputs format comply with the json format from sample notebook.
2 I use the latest version of of framework as suggested
3 Also switch to different model to see if it’s specific model issue.
It still prompts client error:400 , but I notice that as long as I truncated my each line of text to 60 words(randomly pick the number) , both two model work fine. Is this related to the text length limitation? If so, is there any way I can specify the length of text when building the  batch job?
P.S. my data set is around 6k rows , some  rows have more than 512 words/tokens.