I.
.pptx was a 1995 disk constraint.
AI can't read it, links don't open, versions can't roll back. Today's bottlenecks are yesterday's compromises.
You write the idea.
AI writes the deck, the doc, the sheet.
Type one sentence. Get three documents.
Edit any one — the others sync. Share a link, never a file. Always the latest version, on any device.
plain/client-pitch.md
Client Pitch · 03 / 18
Why now is the right moment
- — The inflection point has arrived
- — Our advantage is unique
- — The window closes in six months
confidential · client meeting
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Demo mode · 5 free generations / day. Full power in the workspace.
Every shift in medium happens because a new reader arrives.
By 2026, the new reader is here.
01
1200 BC
Oracle bones
the king
02
1450
Printing press
the literate elite
03
1990s
The internet
everyone
04
2026
AI era
humans + AI assistants
The current Office trio was designed for an age when only humans read. It isn't wrong. It's insufficient.
AI is the brain. Plain is the hands. The brain thinks. The hands ship: versioning, links, fidelity, collaboration. The work after the thinking is always the hands' job.
End of Manifesto
Why text?
Binary was a 1990s compromise. Not a law of nature.
slides.pptxbinary
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agentillegible
slides.mdplain text
# Why now
## Three judgments
- The inflection point has arrived
- Our advantage is unique
- The window closes in six months
agentreadable
II.
Each form has its most natural text shape.
PPT → Markdown (plain text format) · Word → Markdown · Excel → CSV (plain data table). Text isn't a downgrade. It's a return.
III.
The workflow stops fragmenting.
Humans read it. AI reads it. Links open it. Edit once, everywhere refreshes. One link replaces three tools.
Yesterday you delivered a file. Today you deliver a link.
But.
HTML is for reading. Not for being the source.
Having AI generate HTML files directly looks good for a moment — but versions get tangled, clients can't always open them, changing one line means rewriting the whole thing. Plain takes the other route: what you and AI edit is plain text (Markdown / CSV, hidden from the user); what gets delivered is a web page (clients open it directly). Every change is tracked, the link is always live, and you can edit alongside AI.
The trio is not one thing.
Microsoft has sold them as a bundle for forty years, but they are three fundamentally different jobs. Understanding this is the first step to seeing where each must go in the AI era.
No. 01
PPT
Persuasion
Turns a point of view into a story you tell one slide at a time. Low information density isn't a bug — it carries the audience emotionally.
How you know it worksDecisions changed
Gamma and Tome nailed "good-looking" but missed "telling a story." The result: a deck that sounds right and gets forgotten.
No. 02
Doc
Explanation
Unfolds a complex subject into something you can read start to finish. High density. Flow between sections matters.
How you know it worksKnowledge transferred
Notion breaks docs into small blocks — great for "flexible composition," bad for "reading start to finish." Fragmented design makes long-form docs tiring to read.
No. 03
Excel
Computation
C2
=IF(B2<0.6,flag)Turns data into reasoning you can edit and trace. Every cell is editable; formulas show how you got there.
How you know it worksInsight discovered
Airtable and Coda pulled Excel toward "database" and lost what made Excel essential: formulas let people see your reasoning at a glance.
But your analysis is one analysis. The deck for the client, the memo for the team, the model for what-if. They were always meant to come from the same source.
Write once. Three places update.
Not "another AI tool." An Office that's actually usable in the AI era: write, edit, view, edit, ship, all in one workspace.
Edit once, three places sync
The number the client asked about just changed.
Edit one place, every reference refreshes. No more late-night reconciliation.
model.csv
Revenue forecast
1.2M
pitch.md
Q2 revenue forecast：1.2M
Q2-memo.md
Q2 revenue forecast：1.2M
AI drafts the structure. You judge.
"Think clearly" stays with you. "Make it real" goes to AI.
"Five pitch outlines" → five. "Slide 3 of version 2 is off-rhythm" → only that slide changes.
outline · v1selected
outline · v2
outline · v3
One input, any output
Client wants .pptx. Team wants PDF. Boss wants one page.
PPT, Word, Excel, PDF: same input, three seconds to switch. No copy-paste.
Collaboration is sharing a link
Client opened an old version and can't see your update? Send the link, it's always current.
No more emailing files, no more "v3_final_FINAL.pptx". The same link opens for clients, teammates, and AI — always showing the current version. Version history, comments, rollback: all in the workspace.
https://inplain.app/s/a7k2
A
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agent
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Frequently asked
- Writing one is easy. The hard part is what comes after: How do you manage versions? When the client asks to change one thing, how do you change only that? How do you share it with someone who has trouble opening it? Plain picks up where AI ends — your work lives in a workspace, you send a link instead of a file, and comments, version history, rollback all come built-in. One source switches between PPT / Word / Excel on demand.
- Drag them in. Plain takes over structure, styles, and images, and exports back to .pptx / .docx when needed. No starting from scratch.
- Yes. We run compatibility tests across common styles before every release. Files are generated in native Office format and open cleanly in PowerPoint, Keynote, and WPS.
- Default cloud workspace, sync across devices, full version history. Switch to local mode in one click when needed.
- Yes. Multiple editors in the same workspace, with comments and rollback. Share links for read-only access by non-users. Priced per seat on Pro / Team.
- Start free — 50 credits to try. Pro $20/mo (1,000 credits), Max $100/mo (5,000 credits), Team $25/seat/mo. Out of credits? Top up from $5 / 200 credits. See the Pricing page for details.