100% Free · Bring your own model · No content filters

Write the fiction you want,
totally free.

Rewrite, expand, and generate long-form fiction with your own model through OpenRouter or Mistral — no subscription, no markup. Write any genre or theme: you choose the model and set the rules, with no content filters from us. Your work saves itself to your account and follows you to every device.

Start writing free

No credit card · No subscription · Your work on every device

☕ KudoWrite is free — support it on Ko-fi
KudoWrite — Chapter 3: The Last Pier
🔒 Committed

The harbor had gone quiet by the time she reached the last pier — only the rigging still talking in the wind, the gulls, and her own slow breath.

✦ Drafting

He didn't answer. He just watched the water, the way he always did when the truth was about to cost him something.

🔍 Expand ✏️ Rewrite ✂️ Split 🔒 Commit

Draft a rough beat → shape it with AI → commit what you love → repeat.

What is KudoWrite?

KudoWrite is a free, browser-based writing app for long-form fiction. You draft a scene as a rough prompt, then shape it with AI — expanding, rewriting, splitting, and committing beats — until a chapter comes together. It's built for novelists and storytellers who want AI as a drafting partner without giving up control of their voice or their work. And because you bring your own model, you write entirely on your own terms — any genre, any theme, with no content filters imposed by us.

Your work is saved to your KudoWrite account, continuously and automatically — no save button, nothing to back up. Sign in on a laptop, a phone, or a borrowed machine and your projects are simply there, exactly as you left them. Storage is in the EU, and your writing is yours: we never train on it, never sell it, and you can delete any project — or everything — from inside the app whenever you like.

Your prompts and the model's replies are a separate matter, and they stay separate: they go straight from your browser to OpenRouter or Mistral on your own key, and never touch a KudoWrite server. Whether a model provider trains on them is set by your provider account and the model you pick — your call, not ours. The full detail is in the Privacy Policy.

🆓
Totally free
Runs on free AI models through OpenRouter or Mistral. No subscription, no credit card, no usage caps from us — ever.
🔓
No content filters
Write any genre or theme — romance, horror, the dark and the explicit. You pick the model and set the rules; we impose no guardrails on your fiction.
🔌
Bring your own model
Plug in any model from OpenRouter or Mistral with your own key — free or paid, your pick. You control the model, the cost, and the rules.
☁️
Saves itself, everywhere
Sign in and your work follows you to any device, saving as you type. Stored in the EU, never used to train anything, and yours to delete in a click.
✏️
Rewrite
Give a direction and let the AI rewrite any section — preserving your voice while sharpening the prose.
🔍
Expand
Deepen any passage with sensory detail and interiority — no padding, just substance.
✨
Generate
Generate the next scene from context. The AI reads your chapter bible, not just the last paragraph.

How it works

Draft rough, shape it with AI, lock in what you love — then loop.

  1. 1
    ✍️ Start with a rough beat
    Type a scene, a line of dialogue, or just a one-line prompt into a beat card. No need to make it good — that's what comes next.
  2. 2
    🔍 Expand & ✏️ Rewrite with AI
    Expand fleshes a beat out with sensory detail and interiority; Rewrite sharpens it in place. Steer them with an instruction, or just run them — as many times as you like.
  3. 3
    ✂️ Split when a beat runs long
    When a beat grows past a single moment, split it into two with one click and keep shaping each half on its own.
  4. 4
    🔒 Commit what you love
    Lock a beat into your manuscript when it's right. KudoWrite stitches it onto the prose before it, keeping the whole chapter coherent.
  5. 5
    ✨ Generate the next beat — and repeat
    Let the AI write the next beat from everything so far — it reads your story bible, not just the last line — then keep the loop going to the end of your story.

From the guides

Writing fiction with AI, the honest way.

The Hidden Cost of 'Free' AI Writing Apps Are AI writing apps actually free? Usually not. Here's what 'free' really costs — markup, credit traps, and your manuscript as training data — and the honest alternative. Best Free AI for Writing Stories in 2026: An Honest Tier List The best free AI for writing stories in 2026, prose-tested. Which free OpenRouter models actually write good fiction, which to skip, and how to run them free. Use Different AI Models for Drafting and Editing to Cut Your Writing Costs Learn to use different AI models for drafting and editing: draft cheap on free models, polish on a premium one, and slash your AI writing bill without losing quality. 0/mo subscription — no markup, no lock-in, pennies per use. 0/mo subscription — no markup, no lock-in, pennies per use. What Is OpenRouter for Writers? A Plain-English Guide (No API Experience Needed) What is OpenRouter for writers? One key, hundreds of AI models, no markup. A plain-English guide for fiction writers who've never touched an API. 0/mo subscription — no markup, no lock-in, pennies per use. What Is OpenRouter for Writers? A Plain-English Guide (No API Experience Needed) What is OpenRouter for writers? One key, hundreds of AI models, no markup. A plain-English guide for fiction writers who've never touched an API. How to Get an OpenRouter API Key and Write Fiction for Free (Step by Step) A five-minute walkthrough: sign up for OpenRouter, grab a key, pick from OpenRouter free models for writing, and start your novel in KudoWrite at zero cost. 0/mo subscription — no markup, no lock-in, pennies per use. What Is OpenRouter for Writers? A Plain-English Guide (No API Experience Needed) What is OpenRouter for writers? One key, hundreds of AI models, no markup. A plain-English guide for fiction writers who've never touched an API. How to Get an OpenRouter API Key and Write Fiction for Free (Step by Step) A five-minute walkthrough: sign up for OpenRouter, grab a key, pick from OpenRouter free models for writing, and start your novel in KudoWrite at zero cost.
Browse all guides →