# Lunafic vs Sudowrite | Live Your Story or Tool Your Manuscript Source: https://lunafic.ai/compare/sudowrite Lunafic vs Sudowrite ## A story you live in, or a document you work on. Both products help you write fiction with AI. They are built for opposite relationships with your story. Here is the honest split so you can pick yours. The fair start #### Sudowrite A serious writing tool for novelists who work in a document. Craft features like rewrite and describe tools, brainstorming, and a story bible you fill in by hand. If your goal is finishing a manuscript for publication, it is built for exactly that. #### Lunafic A story world you step inside. You play your main character, the AI plays everyone else, and every scene becomes a chapter you keep. Built for writers who want to experience the story while writing it. Since V4 a world you build can also be published as a Playable World, with starting choices, endings, and pictures for its big moments. We know this category firsthand. Lunafic V2 was built as a direct competitor to Sudowrite, a professional writing tool for writers. Then we went back to our core, playing inside stories. Lunafic still runs on that writing engine, first built for professional fiction writing and now tuned for roleplay, and the manuscript workflow is gone. The core difference ### Where you sit relative to the story. 01 #### Inside the scene, or above it Sudowrite keeps you above the manuscript, running tools on paragraphs. Lunafic puts you inside the scene as your character. The AI never plays you and plays everyone else. 02 #### The bible is read, not just stored A story bible you fill by hand is a reference document. Here the world bible is read by the AI before every reply, and long memory carries what actually happened across chapters. 03 #### A story that persists You play it like a chat, and every scene is kept in chapters. You can reread the night from chapter 3, fix any line of it by hand, or keep playing it next month. ### Side by side Relationship to the story Sudowrite: You work on the document Lunafic: You play inside the story Who writes your main character Sudowrite: The tools draft and rewrite with you Lunafic: You do, in MC Mode, the default. Author Mode lets the AI write the whole scene when you want it World and lore memory Sudowrite: Story bible, filled in manually Lunafic: World bible the AI reads every reply, plus long story memory Output shape Sudowrite: A manuscript document Lunafic: Chapters of a story you can reread, edit line by line, and export anytime Multi-character scenes Sudowrite: You write all characters yourself Lunafic: The AI plays every other character in their own voice Best for Sudowrite: Finishing a novel for publication Lunafic: Living the story while you write it | What you care about | Sudowrite | Lunafic | | --- | --- | --- | | Relationship to the story | You work on the document | You play inside the story | | Who writes your main character | The tools draft and rewrite with you | You do, in MC Mode, the default. Author Mode lets the AI write the whole scene when you want it | | World and lore memory | Story bible, filled in manually | World bible the AI reads every reply, plus long story memory | | Output shape | A manuscript document | Chapters of a story you can reread, edit line by line, and export anytime | | Multi-character scenes | You write all characters yourself | The AI plays every other character in their own voice | | Best for | Finishing a novel for publication | Living the story while you write it | The honest pick #### Pick Sudowrite if You are writing a manuscript you intend to publish, you want craft tools over paragraphs, and roleplaying inside the story sounds like a distraction. #### Pick Lunafic if You want to be in the scene as your character, you want every other character played back to you, and you want the story remembered chapter to chapter. ### Related features [Writing engine→First built for professional fiction, now tuned for roleplay.](https://lunafic.ai/features/ai-co-writer/) [MC Mode→The AI never writes your character's dialogue, thoughts, or actions.](https://lunafic.ai/features/mc-mode/) [Story memory→The AI keeps the whole story, and you can open the memory and fix it.](https://lunafic.ai/features/story-memory/) [Wiki→Character sheets the AI reads before every reply, so characters know how to talk.](https://lunafic.ai/features/world-bible/) [Editor and chapters→Edit any line, retry or remove a reply, and keep the story as chapters.](https://lunafic.ai/features/editor/) [ChatGPT and Claude→Connect ChatGPT, Claude, Gemini, or another AI app to brainstorm, add pictures, and manage your worlds.](https://lunafic.ai/features/agent-access/) Questions people ask ### Is Lunafic a replacement for Sudowrite? No, they serve different writers and different moments. Sudowrite helps you manage and polish a manuscript you are writing toward publication. Lunafic is where you live inside the story world between and during drafts. Some novelists use both, a document tool for the manuscript and Lunafic for the world. Knowing which one you need is the honest first step. ### Does Lunafic have rewrite and describe tools? We removed most of those tools on purpose when we became a roleplay-first product, because they served a manuscript workflow we no longer aim at. You can still edit any line like a book, in your own Private world and in a Playable World someone else built. The craft focus moved to the scene level, where memory and the characters matter more than word-level gadgets. ### Can I export what I write? Yes, at any time, in every world. Your story belongs to you, it is never used for AI training, and you can leave with the chapters you wrote. In a Playable World you export your own story, and the world itself stays with the author who built it. We would rather you stay because the story works, not because the door is locked. ### Which is better for long stories? They have different strengths. Sudowrite helps you manage a long manuscript with craft tools over paragraphs. Lunafic keeps a long story consistent because the world bible and long memory are read by the AI continuously, so chapter forty still agrees with chapter four. For roleplay-length stories, that consistency is the whole game. Pick by the job, not by the brand. ### Try the story side. Play a character inside a world tonight. Free to start. Zero stories used for AI training. Official Member [![NVIDIA Inception Program](https://lunafic.ai/nvidia-inception-program-badge-rgb-1c-blk-for-screen.svg)![NVIDIA Inception Program](https://lunafic.ai/nvidia-inception-program-badge-rgb-1c-wht-for-screen.svg)](https://www.nvidia.com/en-us/startups/) Keep reading [Lunafic vs dreammir.ai](https://lunafic.ai/compare/dreammir/) [Lunafic vs Character.ai](https://lunafic.ai/compare/character-ai/) [Lunafic vs OOC](https://lunafic.ai/compare/ooc/) [Roleplay for fiction writers](https://lunafic.ai/roleplay-for-writers/)