The writing studio
Rough notes,
refined.
Lumen turns the way you actually think — fragments, half-sentences, arrows — into finished documents, emails and posts. Quietly, in your voice.
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Specification
1.8sMedian draftNotes to finished page
Opus 4.8Reasoning coreAnthropic's frontier model
12Output formsDocs, email, posts, briefs
ZeroRetentionNothing stored, ever
The craft
From the way you think
to the way it should read.
Real, working Lumen. Paste your own rough notes, choose a form, and watch it draft — powered by Claude.
Your notes
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Lumen
Your finished document will appear here. Press Refine.
Private beta
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Lumen is opening to a small group of writers, founders and teams. Request an invitation below.