
You've generated it. You've winced at it. You've tried to edit it into something readable and given up.
“A shiver ran down her spine.”
“He couldn't help but notice the way she...”
“Little did she know, this was only the beginning.”
“She let out a breath she didn't know she'd been holding.”
“Their eyes met across the crowded room.”
Those are not creative choices. They're what happens when a model trained on internet text, code, and chat transcripts tries to write fiction. The model picks the most statistically probable next word, and for fiction, the most probable word is always the most generic one. GPT-4 and Claude are good at summarizing documents. They are bad at writing a scene you'd want to read twice.
The big AI writing apps built their own proprietary model or licensed one from OpenAI. They test the output with benchmarks and demo pages. That's fine for marketing. It doesn't tell you whether the model can hold tension across a 90,000-word manuscript.
The open-source community tests differently. Thousands of writers, hobbyists, and researchers have spent years fine-tuning language models on creative fiction and testing them the hard way: by actually writing and publishing books with them. They ship on KDP, Wattpad, AO3, and Royal Road alike. They rank models on community leaderboards. They know what works because they read the output as authors, not as product managers.
The models that survive that process are better than anything built in a lab. The community is the quality filter. The problem is access. Using these models means wading through quantization formats, GPU requirements, prompt templates, and model cards.
We watch those communities every day. We test every release worth testing. We put the winners in your editor, configured and ready to use. You get the models. We handle the plumbing.
| Feature | The expensive writing apps | Unsloppy |
|---|---|---|
| Models | One proprietary model, or GPT-4 with a wrapper | 10-15 open-source models, each selected because the fiction community rated it best-in-class |
| Who picks the models | Engineers who test output with benchmarks | A data scientist who also publishes fiction and tests models by writing with them |
| Prose quality | Output still reads like AI. Users spend hours editing. | Models fine-tuned on creative prose, plus backend humanizer processes that strip remaining AI patterns |
| Model rotation | Stuck with whatever the vendor ships | Catalog rotates as the community releases better models. You always get the current best. |
| Post-processing | None. Raw model output, take it or leave it. | Dedicated editing model and automated slop-removal in the backend before output reaches you |
| Creative freedom | Content filters that panic at tension | Your story, your rules. We only block illegal content. |
| Workspace | Editor locked to their proprietary model | Full manuscript editor with lorebook, chapter management, and KDP export |
| Price | $22-44/month for a single model | $14.99/mo Pro, $29.99/mo Premium. Ink top-ups available. |
The founder is a data scientist who also writes fiction, publishing under the pen name Charles B. Antoine. He serializes a LitRPG on Royal Road and has published multiple books on Amazon KDP. He built Unsloppy because every AI writing tool he tried produced prose he wouldn't put his name on.
He worked at two of the market-leading AI writing apps, first as an employee and then as a contractor, genuinely excited to help build the creative tools of the future. He left both disappointed. They were chasing revenue, not quality, and the people making the product didn't use it to write.
Unsloppy exists because he wanted the tool they should have built. Every model in the catalog is tested the same way: can it write a chapter worth keeping? If no, it doesn't ship.
Manuscript-length projects need manuscript-level tools. We built the writing environment around the work, not around a prompt box.
Build a living reference document for your story. Characters, locations, magic systems, faction politics, timeline events. The AI injects the relevant entries into context as you write, so it stays consistent with your world without you having to re-explain everything in every prompt.
Build characters with motivations, contradictions, and speech patterns the AI remembers from chapter one through chapter forty. When your protagonist's ex walks into the bar in the third act, the AI knows their history.
Highlight a paragraph. Tell the AI to tighten the dialogue, cut the adverbs, or raise the stakes. It rewrites the selection in your voice, not its own.
One-click export to EPUB, DOCX, and PDF with KDP-compliant margins, mirrored gutters, embedded fonts, and professional front matter. Upload directly to Amazon without touching a template.


Describe your book. Set the genre, the tone, the length. The agent builds your outline, writes your chapters, and checks its own work against your lorebook and character cards. You review, redirect, and approve. It handles the volume. You keep creative control.
We picked a model specifically geared toward book editing: structural feedback, line editing, prose tightening, pacing adjustments. It runs in the backend on your output before you see it, reading your manuscript the way a developmental editor would.
On top of the editing model, we run multiple automated passes that detect and strip AI slop patterns: recycled phrases, flat pacing, over-hedging, generic emotional beats, and familiar clichés.
Every model in our catalog is a community-tested creative writing fine-tune. Some write tighter prose, some drive harder action, some track complex worlds better. We label each one by its strength so you can pick the right tool for what you're writing right now.
Your lorebook and generation settings steer the output toward your genre. The model provides the prose quality. You provide the direction.
“The Brainstormer”
Rapid-fire outlining and plot beats. A fresh, eager tone that helps when you're staring at a blank page.
“The Plot Pusher”
Fast and direct. When a scene is stalling, this model pushes the narrative forward without descriptive overhead.
“The Continuity Checker”
A pocket assistant that excels at referencing your lorebook, checking consistency, and keeping quick drafts on track.
“The Prodigy”
Exceptional prose fluency, strong dialogue, and one of the most talked-about new releases in open-source creative writing.
“The Dialogue Master”
Nuanced, human-sounding dialogue and steady pacing. Excels at keeping character voice consistent across long sessions.
“The Action Director”
High-tension scenes, suspense, and dark fiction. This model drives conflict and pacing naturally.
“The Ruthless Editor”
Cuts down on flowery AI phrasing and focuses on show-don't-tell prose.
“The Ensemble Weaver”
Complex scenes with multiple characters. Tracks intertwining plotlines and rarely confuses who is doing what in a crowded room.
“The Wordsmith”
Gorgeous, literary prose with minimal prompting. The community gold standard for raw output quality.
“The Emotional Core”
Deep, resonant storytelling. Reliably captures character psychology, uncovers subtext, and maintains pacing during emotional chapters.
“The Epic Novelist”
Massive context window for sprawling series. Juggles numerous subplots without losing the narrative thread.
“The Worldbuilder”
Highly analytical and structured. Best for hard sci-fi, complex mysteries, or intricate fantasy systems with cause-and-effect plotting.
“The Unbound Architect”
The heavyweight. Manages massive, intricate worlds with highly permissive creative guardrails.