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Your Story Deserves
a Muse

Clio is the writing companion that understands your world. Track characters, catch contradictions, and bring your universe to life.

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For the novelist 80,000 words into book three, who just realized the blacksmith died in book one.

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This is Chronicles of Lythronyx.

Eighteen years. Forty characters. One graph. Click any node — it all connects.

From Lysandra's Daughter and the Mechis Son

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Click any node to focus its neighborhood. Drag nodes to rearrange. Pinch/scroll to zoom.

And this is its plot.

You thought your story was linear. It isn't.

From Lysandra's Daughter and the Mechis Son

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Click any node to focus its neighborhood. Drag nodes to rearrange. Pinch/scroll to zoom.

What Clio Does Differently

World-Sense

Clio doesn't just read your words — she understands your laws.

Change a law of magic in chapter 2, and Clio flags every scene in the rest of the book that now breaks the rule. Rename a kingdom and watch every reference update. This isn't search-and-replace. It's your world, aware of itself.

Clio World-Sense — your story universe aware of itself
Experimental

Voice Fingerprinting

Style that actually sounds like you — and like each of your characters.

Clio learns your prose cadence and each character's voice, then keeps both consistent chapter after chapter. Your narrator stays yours. Your blacksmith stays his. No generic AI slop — just your voice, amplified.

Grounded in Your Words

Your Story Is the Only Truth

Clio never makes things up about your world.

Ask Clio “what was the name of the tavern in the prologue?” and she answers from your manuscript — not from the internet, not from a trained model, not from guesswork. Every answer is grounded in your own words.

What was the name of the tavern in the prologue?
Clio
The Crooked Lantern. Prologue, page 4: “They ducked into the Crooked Lantern, where the ale was cheap and the questions cheaper.”
A Taste of the Toolkit

Six of Clio's Sharpest Tools

There are 29 in total. These are the ones that change how you write.

Full Knowledge Graph
Everything in your story — characters, places, events — connected in one living map.
Consistency Checker
Catches contradictions you’d never spot yourself: eye color changes, broken timelines, renamed towns.
Chapter Web
Your plot as a graph. Callbacks, foreshadowing, and thematic echoes, visualized.
Voice Profile
How each character speaks — formality, rhythm, signature phrases — learned and enforced.
Family Tree
Lineages and bloodlines across generations, rendered as an interactive tree.
Character Arcs
How every character changes chapter by chapter, tracked automatically as you write.
See everything Clio tracks →
Our Promise

From Writers, For Writers

Clio wasn't built in a boardroom by people chasing the next AI trend. It was built by a novelist who spent eighteen years writing a fantasy series and knew exactly what every fiction writer needs.

Every feature exists because a writer needed it. Every decision was made by someone who has lived the grind. Clio the Muse will know your book as well as you do — and walk with you, chapter by chapter, all the way to publication.

Read Our Story →
FAQ

Common Questions

Everything you need to know about Clio.

Clio is built from the ground up for fiction writers. Unlike generic writing tools, Clio understands your story world — characters, locations, timelines, relationships, and lore. It builds a living knowledge graph of your universe and catches contradictions, suggests improvements, and helps you maintain consistency across thousands of pages.
Yes. Clio uses a BYOK (Bring Your Own Keys) model. You connect your own Claude or Gemini API key, and we charge only for the platform. This means you get the best models at cost, with no markup.
Absolutely. Clio is designed for complex, multi-book universes. Your World Bible, character database, and knowledge graph span across all your books, making it easy to track continuity across an entire series.
Your manuscripts and data are stored securely in your own account. We use enterprise-grade encryption, and your API keys are never shared. You can export all your data at any time.
Clio supports TXT, DOCX, PDF, EPUB, and Markdown files. You can upload entire manuscripts and Clio will automatically split them into chapters for analysis.
Coming soon! We're building collaboration features that will let you share specific books or sections with editors and beta readers, with fine-grained permissions.
The interface is in English, but Clio understands and works with any language. You can write your manuscript in Spanish, French, Japanese, or any other language — Clio's analysis, consistency checking, and all features work just the same. Clio can also guide you through the interface in your language and translate its feedback to match yours.
Ready to Begin?

Start Building Your World Today

Free to start. No credit card required. Only pay for what you use.

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