NarrativAI
Now co-writing with Muse — free to start

The AI co-writer that already knows your characters.

NarrativAI keeps your characters, world notes, and chapters in one studio. Muse writes with your character's traits, your world's tone, and where your story left off already in mind, and learns your style as you go, so you're not re-explaining your cast every session. A visible co-writer, never a hidden ghostwriter.

Built for novelists, fantasy authors, screenwriters, and tabletop worldbuilders.

No credit card · Your universe stays yours · For writers 18+

No ads, ever. We never sell or use your data for targeted advertising.

NarrativAI - Your OCs deserve a home, not just a chat window. | Product Hunt
Illustrative example. A Character Codex for Ilse Marrow, cartographer of the drowned coast: wants to map the coast that took her village; fears blank edges on a map; voice precise, then suddenly tender. Muse writes: Ilse inks the last inlet before the tide can take it. “There,” she says, softer than she means to. “Now it can’t disappear.”

See the difference

Same request. One of them knows who Mara is.

Illustrative example, not a live generation.

NarrativAI

Character Codex · Mara Venn

  • · Afraid of deep water since the flood
  • · Speaks in short, clipped sentences
  • · Distrusts the harbor guild

You

Continue the scene where Mara reaches the harbor.

Muse

Mara stops where the planks turn slick. "Not the boat. Find another way."

From Mara's profile: afraid of deep water · clipped speech

Muse writes her lines from the traits you saved, in every scene, without you repeating them.

How it works

From a blank page to your first scene in three steps.

Illustrations of the real setup screens.

  1. 1

    Name your world and set its tone

    Pick the tone tags that fit, like Fantasy or Slow-Burn. Muse writes in that register from the first line.

  2. 2

    Save your characters

    Give each character a name and a few traits. They go into your Character Codex and stay there, scene after scene.

  3. 3

    Co-write the next scene with Muse

    Tell Muse where the scene goes. It drafts with your cast and your tone in mind, and shows you what it's doing while it works.

Co-write with Muse

More than a chat companion. A home base for your universe.

Everything you need to keep your characters, lore, and chapters in one warm, private place.

Character Codex

Save each character's traits, flaws, and relationships once. Muse writes their dialogue from those traits in every scene.

Unlimited characters, every tier

Muse, Visibly Co-Writing

Listening, Drafting, Safety Checking — Muse's states keep you in the loop, never watched, never guessing.

~1,750 words/day free, then top up with Usage Credits ($2.99 / 5,000 words)

Lore Bible

Timelines, magic systems, locations, and factions — structured worldbuilding beyond a single character sheet.

Premium feature

Our promises

Your story, on your terms.

You always see what Muse is doing

Muse drafts when you ask, and shows its state while it works: Listening, Drafting, Safety Checking. Every draft is safety-checked before you see it.

Your writing isn't the product

No ads, ever. We never sell your data or use it for targeted advertising, and we don't use any AI service tier that lets providers train public models on your writing.

Leave whenever you like

Delete your account and everything in it yourself, any time, from your Profile. No emails to send, no one to ask.

Simple pricing

Less than a coffee a month.

Start free. Upgrade only when your universe outgrows it.

Some new writers qualify for Early Access pricing — you'll see your price before paying anything.

Free

$0/mo

  • Unlimited characters
  • ~1,750 words/day generation cap
  • No ads, ever

Premium

7-day free trial

$5.99 / 30 days

7-day free trial, no card required.

  • Unlimited generation, no daily cap
  • Reading Mode
  • Lore Bible
  • Download your full story (.txt)
  • No ads, ever
  • Renews every 30 days, cancel anytime

Founding Member

$99 once

Be one of the first 100.

  • Lifetime Premium access
  • 50,000-word Usage Credits grant
  • Permanent Founding Member badge
  • Rate locked in for good

Create your universe first — we'll take you straight to checkout for your $99 pass.

Questions

Frequently asked questions

What is NarrativAI?

NarrativAI is an AI co-writing studio for novelists, fantasy authors, screenwriters, and tabletop worldbuilders. You keep your characters, world notes, and chapters in one place, and co-write scenes with Muse, a visible AI co-writer.

What is the Character Codex?

The Character Codex (called the OC Vault inside the app) is where you save each character's traits, flaws, and relationships. Muse writes each character's dialogue from those saved traits in every scene, so you don't have to repeat them.

Who is Muse?

Muse is NarrativAI's AI co-writer. Unlike tools that generate silently, Muse always shows which state it's in — Listening, Drafting, or Safety Checking are live in the beta today, with Suggesting and Resting still on the way — so you always know what it did to your universe and why.

Is NarrativAI free to try?

NarrativAI has a free tier and is currently in closed beta. The first 100 members can also take a one-time $99 Founding Member pass: lifetime Premium access, a 50,000-word Usage Credits grant, and a permanent badge — a rate that's locked in for good.

How is NarrativAI different from other AI writing tools?

A new chat with a general-purpose chatbot starts without your characters. In NarrativAI, your saved characters, your world's tone, and the latest part of your story are already in context when Muse writes, it learns your style as you go, and Muse's visible states mean the AI never works as a black box.

Get in touch

Questions, feedback, a bug to report, or interested in joining the team?