Suprmind offers a solid ChatHub alternative with plans starting at $19 per...

https://wiki-aero.win/index.php/Can_I_Upload_PDFs_and_Spreadsheets_in_Suprmind_Like_ChatHub%3F

Suprmind offers a solid ChatHub alternative with plans starting at $19 per month for Spark and $45 for Pro. It features six distinct modes, a Decision Validation Engine to improve accuracy, and a Red Team function to spot biases