Type one prompt. Watch Atrium draft your brief, three creative variants, and the campaign plan — inside docs that look like every editor you already use. Every edit reversible.
$50
per seat / month
14 days
free trial, no card
1 click
to revert any edit
You paste a prompt into a chat tab. Copy comes back. You paste it into a doc. Edit. Realize the brand voice is off. Re-prompt. Paste again. The AI never sees your work — your team is the integration layer, shuttling text between a chat window and the actual docs where the work lives.
When you open a doc in GRID, the Atrium side panel is right there. Type "draft a Meta ad campaign for our Q3 launch, three creative variants targeting mid-market founders." Atrium reads your brand DNA, drafts the brief, generates the variants, and proposes the campaign plan — all visible as edits inside the doc, not pasted text from a chat.
Atrium proposes edits as cards in the side panel: kind, before, after, one-sentence reasoning. Apply one. Apply all. Decline. Revert any applied edit later and the doc returns to its pre-edit state. Every action writes to the audit log — what Atrium read, what it decided, what you accepted.
The doc editor looks like Notion. The comment thread looks like every comment thread. The side panel sits where you expect it. The novel thing is what happens when you ask: Claude (Anthropic) reasons over your full brand DNA, your last three briefs, your campaign history. The chrome is familiar; the substrate is uniquely capable.
+ Documents — where Atrium drafts briefs, creative copy, and campaign plans. + Brand DNA — capture once (tone, audience, values, voice don'ts); Atrium reads it on every edit. + Reversible everything — every applied edit can be reverted to its pre-state. + Cost transparency — token + USD usage shown per prompt. + Multi-environment — one workspace per client (agencies) or one per product line.