Docs, decks, sheets, notebooks — now first-class (and uploadable)

Artifacts used to mean code and text. Today they mean real documents — the assistant can now build and edit .docx files, .xlsx spreadsheets, .pptx decks, and Jupyter notebooks natively, and you can bring your own files in from outside 1Chat too.

Rich types that behave like the real thing

A document artifact supports headings, lists, tables, bold — the structure you'd expect from a word processor — and downloads as an actual .docx, not a text dump. A spreadsheet artifact is one CSV per tab with real formulas — =SUM(...) and friends actually calculate — and downloads as a styled .xlsx. A slide deck builds out as a proper .pptx. Notebooks (.ipynb) hold code and output cells side by side. And mermaid diagrams render live as you or the assistant edits them, rather than sitting as raw text.

one-chat.app — it builds things
Turn that into a budget I can play with.
Done — live budget on the right. Drag any number.
Japan · Aprillive
Flights$1,840
Hotels$1,310
Food + fun$900
Total $4,050 · under budget 

PDFs as knowledge, not just files

A PDF artifact isn't just a static attachment — it becomes a knowledge source the assistant can actually read from and reference while it works, while the original file stays available for download exactly as you added it. Point the assistant at a PDF and it treats the content as something it knows, not something it has to re-parse from scratch every time.

Bring your own files

You don't have to start from a blank artifact. Drag any file into the library, or use the Upload button, and 1Chat auto-detects what it is — you can override the guess if it gets it wrong. From there it's parsed straight into an editable artifact: a .docx becomes an editable document, an .xlsx becomes a live sheet with working formulas, a .pptx becomes an editable deck, and a .pdf becomes a searchable knowledge artifact with the original kept alongside it for download.

That means the report your team already wrote, the spreadsheet you've been maintaining for months, or the deck from last quarter doesn't have to be recreated to be useful here — it just needs to come in the door.

Why this matters

The point isn't novelty formats for their own sake. It's that the assistant can now produce — and you can now bring — the actual documents you use for real work, edit them the same way you'd edit anything else in the library, and export them back out as files that open cleanly in Word, Excel, and PowerPoint. No format is a dead end anymore.