Voice fingerprint
Drop in three pages you love; Vellum rebuilds your rhythm, vocabulary and sentence physics.
AI writing studio
Long-form writing that keeps your voice and loses the blank page.
Vellum drafts, restructures and fact-checks book-length manuscripts, essays and newsletters. It learns your cadence from three pages you already love, then writes beside you — never instead of you.
Free to try · No credit card · Set up in five minutes
Manuscript · Ch. 4
You“Rewrite this passage so the reveal lands later.”
VellumDone — the reveal now lands in the final clause. Tension up 18%, sentence length down 12%. Two continuity flags to review.
Voice match 96%2 continuity notes12 min saved
What it does
The parts that actually save you time.
No new dashboard to learn. Vellum sits next to the work you already do and removes the repetitive half of it.
Chapter-scale memory
A 90k-word manuscript stays coherent — timeline, names and promises are tracked across chapters.
Fact-check rail
Claims are flagged inline with sources before anything ships to an editor.
Rewrite without losing drafts
Version every paragraph, compare branches side by side, merge what works.
How it works
Three steps, then it just runs.
1
Bring your pages
Import a manuscript, a messy draft, or start from a one-line premise.
2
Set the guardrails
Choose voice, tense, reading level and the facts that must not move.
3
Write together
Draft by section with inline notes — you approve every paragraph.
Who it's for
Built for people doing three jobs at once.
Fiction authors
Keep a series bible consistent across eight books without an assistant.
Newsletter writers
Turn one research session into four issues that still sound like you.
Non-fiction editors
Restructure 300-page drafts in an afternoon, with change tracking.
6×faster first draft
90kwords of context
0of your voice lost
“I stopped dreading the blank page. Vellum writes badly first so I can write well second.”
Start free. Keep the calm.
Start your first chapter — no credit card, cancel in one click.