Uploading to your brain

Your brain is for the things you want your agent to know and use: notes, documents, meeting write-ups and working files. It is a knowledge base, not a storage bin. Anything big and heavy belongs in Google Drive instead (see Large files and media).

What to put in it

• Notes and plain-text writing (markdown, text, CSV, JSON, HTML)
• Documents you want searched and quoted back (PDFs, Word, Excel)
• Short context files, such as a one-page summary per client or project

Size limits

• Text and notes (markdown, txt, csv, json, html and similar): up to 1.5 MB per file.
• Other file types (PDF, photos, Office files, video): up to 6 MB per file.
• Images attached to a chat message: up to 5 MB each, and up to 4 images per message. This is the limit you hit when you drop a big photo into a conversation.
• Documents attached to a chat message: PDF up to 32 MB, Word and Excel up to 15 MB, CSV, markdown and text up to 5 MB, and 40 MB in total per message.

Files over the limit are skipped, and the app tells you which one and why.

If a file is over the limit

Don't shrink it until it's useless. Keep the original in Google Drive and leave a short note in your brain that points to it. The steps are in Large files and media.