Considering Julius Ai vs Copilot

I use co-pilot to attach 1.Microsoft documents (Excel including .csv format, .txt. .docx, .doc, .pdf) and get M-code and other coding needs, 2. grammar, 3. Use as regenerative AI to seek answers 3.Help in coding in C, python and VBA scripts etc Can you help me to compare Julius in the above points ?Which LLM is used by Julius ? is it Chatgpt4 and above ?