Chat with any model you hold a key for, and pick which one answers from the composer, message by message. The same conversation can move between them.

Attach files and images to a message where the model takes them — the catalogue records what each one accepts, so the composer refuses a file before you send it rather than after.

Keep the work in order as it grows: projects group related chats, tags label them, and the usage page counts the tokens you have spent. All of it stays in this browser, and you can sync it to your own Google Drive when you want a second copy.