For Zoho AI
Zoho Native Files: zwriter, zslides, zsheet
Document & Text Files: pdf, doc, docx, txt, md, rtf, odt
Presentation Files: ppt, pptx, odp
Web & Email Files: html, eml
Image Files: png, jpg, jpeg
Audio Files: wav, flac, mp3, opus, m4a
Video Files: mp4, mpeg, mpg, mov, avi, flv, webm, wmv, swf, mkv
For OpenAI
Code Files: c, cpp, cs, go, java, js, php, py, rb, sh, ts
Document & Text Files: doc, docx, pdf, tex, txt, md
Presentation Files: pptx
Web Files: css, html
Data Files: json
Image Files: png, jpg, jpeg, webp
File Size limits

Note: File sizes limitations vary based on the AI service (Zoho AI or OpenAI) configured by your Team Admin.
For Zoho AI
Audio & Video Files: Up to 1 GB
All Other Formats: Up to 10 MB
For OpenAI
General: Up to 512 MB per file
Spreadsheets & CSV: Up to ~50 MB per file
Images: Up to 20 MB per file
For detailed info on OpenAI file size limits, refer this link.