Table of Contents
CometAI allows you to upload files directly into a chat and ask questions about their contents. You can upload various document types, have various Language Models analyze or summarize them, and revisit them later without needing to re-upload. Firstly, Open the CometAI platform in your browser and log in using your UTD NetID and password.
- Start in a New or Existing Chat.
- Click on the Plugin Selection, and enable the RAG feature option as shown in the figure.

- From the main chat window, click the Plus icon located at the bottom left of the message bar.
- Your file selection window will open.

Upload Your Document
- In the file selection window, choose the file you want to upload.
- Click Open to attach the document.
- Depending on the document size you uploaded, the upload might take some time.
- Once the document is completely uploaded, it will appear as an attachment above the text input bar.
- If you start typing and send a message, the attached document will automatically be included in the conversation.
- Type your question into the chat and press Enter.
- The Model will process the document and respond based on its content.

Tip: For details on where documents are stored and how to access them in different storage modes, read the
Conversation Storage Options article in the Help Center.
Access and Manage Uploaded Documents
- To find previously uploaded documents, click the pages icon at the bottom left of the chat window.
- A "Files" pop-up window will appear, showing all available files.
- From this window, you can:
- Download a file
- Delete a file
- Sort by file type, date created, or name
- Click a file’s name to add it to the current chat.

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File Category
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File Extension(s)
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Usage Notes / Limitations
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Presentation
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.ppt
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Convert to .pptx if possible, for better compatibility
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.pptx
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Web
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.html
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Data
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.csv
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Get guidance on using the correct model for your case on Use-Case based Model Selection Guidance in CometAI
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.xlsx
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.json
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Document
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.docx
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.pdf
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.md
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.txt
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Image
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.jpg
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.png
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.gif
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.heic
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CometAI currently does not support HEIC image files.
Recommended workaround:
- Open the image on your device
- Save or export it as JPG or PNG format
- Upload the converted file
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Script
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.py
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.sh
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Archive
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.zip
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Supported only for flat ZIPs - files must be at the root of the archive (no nested folders). If folders are present, unzip and re-zip with files at the top level.
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- Limitations for file uploads are still being tested.
- Uploaded file performance depends on the model’s context size and file complexity.
- Large or complex files may take longer to process.
- For best results with spreadsheets, keep data sets small and use a higher-capability model.
Best Practices