Copyediting
Spelling, grammar, punctuation, and clear mechanical errors. You review concrete locations and decide which changes belong in the manuscript.
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AI Editing
AI editing for your novel on three clear levels
Copyediting, line editing, and developmental analysis can use the same manuscript context. You review every suggestion and keep control of the final text.
In brief: EPOS-AI separates AI editing into copyediting, line editing, and developmental editing. Each level can use the same manuscript context, allowing the system to consider earlier chapters, character decisions, and project notes instead of treating every passage as an isolated prompt.
The heart of EPOS: Editing that still sounds like you
A sentence can be flawless and still no longer sound like its author.
Generic AI editing works from general rules. Deliberate repetition, short sentence runs, or sparse language can be smoothed away. EPOS also considers the writing patterns in your own manuscript.
73%of the measurable distance to the author's own writing was closed on average. The range was 58 to 88 percent.
10 to 0broken form rules per chapter in the documented measurement.
10xbetter than chance in author recognition: 35 percent among 30 candidates versus 3.3 percent chance.
A preliminary voice profile is possible from 3,000 words. For a strong profile, 20,000 words are recommended. An independent blind study with multiple authors is still pending.
A novel is not a long chat
Improving one paragraph is easy. Editing a novel means remembering why a decision in Chapter 4 still matters in Chapter 29. A character must not know information they never received. A subplot should not quietly disappear. A deliberate repetition should not be erased because a generic style rule calls it redundant.
EPOS-AI keeps manuscript, characters, plot lines, research, and style decisions connected as one project. Depending on the plan, the active manuscript context is 22,500, 60,000, or 112,500 words.
The limit matters: more context does not make an AI infallible. Every suggestion still needs human review. EPOS-AI is a prepared second opinion, not the final authority on a book.
Three editing levels for different stages
Line Editing
Rhythm, repetition, unclear references, filler, and awkward sentences. The goal is readability without sanding away every personal choice.
Developmental Editing
Logic, motivation, tension, character consistency, and narrative plausibility across the available manuscript context.
The four stages of editing, and what AI handles
The three levels in EPOS are a product decision. The profession knows four stages, and the answer to the question of AI suitability differs for each one.
Structural editing
The fundamental architecture of the novel: does the plot work? Is the character development believable? Are there structural holes? AI suitability: limited. Tension arcs and pacing issues in chapter structures can be analysed, but the question "does this story work?" requires human judgment.
Developmental editing
Detail work on content: character consistency, plot logic, world consistency, timeline. Are all threads resolved? AI suitability: good to very good. EPOS reviews relevant chapters together within the available manuscript context and can flag a contradiction between an earlier limitation and a later action.
Line editing
Sentence by sentence: does the text flow? Is the language precise? Are there too many filler words, passive constructions, repetitions? AI suitability: very good. For every paragraph it becomes visible which words are weak and where the writing flow stalls.
Proofreading
The surface layer: spelling, grammar, punctuation, typos. AI suitability: excellent for a systematic first pass. Missed errors and incorrect suggestions remain possible, so a careful final review stays important.
A practical editing workflow
Create the project
Bring chapters, character information, and relevant project notes into one workspace.
Choose the editing level
Use copyediting for mechanics, line editing for prose, or developmental editing for the structure and logic of the manuscript.
Review every suggestion
Accept it, adapt it, or keep the original. The author or editor remains responsible for the text.
Export the revised manuscript
EPOS-AI supports Word, EPUB3, and print-ready PDF. Pro Editing can process a complete manuscript and produce a Word file with tracked changes.
Common mistakes in AI editing
Three mistakes come up again and again. None of them is the fault of the tool.
Accepting every suggestion blindly
EPOS does not know your style as well as you do. When a sentence is flagged as too long that was deliberately long for rhythm, you ignore the suggestion. The edit is an offer, not a mandate.
AI instead of beta readers
AI editing will not tell you whether your novel works emotionally. Only human readers can judge that. The two are not alternatives, they are complements.
Starting too early
Edit only once the manuscript stands. Revising individual chapters before the first draft is finished means working on content that will change anyway as you keep writing.
Concrete manuscript work
What the AI edit actually checks inside a novel scene
A useful edit cannot merely polish isolated sentences. It also needs to understand what a scene is doing in the manuscript. EPOS connects the selected editing level with the manuscript context available in your plan. This lets a suggestion consider grammar, character logic, scene purpose, and earlier project decisions.
For example, a character may fall silent from fear in chapter four. A later scene should not casually claim that the same person always becomes loud under pressure unless the change is intentional. EPOS can bring those passages together within the available manuscript context. The result remains a working hypothesis. The later reaction may show deliberate development. A useful suggestion therefore includes not only a possible change, but also the connection you should review.
An error with consequences
A wrong character name is easy to notice. A reaction that no longer fits motivation established several chapters earlier is harder. Developmental editing can examine those connections within the available context and explain why a passage deserves another look.
A repetition with a purpose
Not every repetition is weak. It can create rhythm, carry character voice, or reinforce a deliberate motif. The voice profile helps distinguish an accidental cluster from a pattern that belongs to your prose.
A correct sentence that still does not fit
A sentence can be grammatically correct and still slow the scene. Line editing can examine rhythm, transitions, and word choice. You see the suggestion and decide whether it strengthens the intended effect.
Your voice remains the reference
You decide what EPOS should preserve or avoid
A preliminary or stronger voice profile is created from a sufficiently large sample of your manuscript. You can mark patterns as part of your voice, ask EPOS to work against them, or leave the decision open. This turns a generic style correction into a documented choice about your own text.
A preliminary profile is possible from 3,000 words. For a strong profile, 20,000 words are recommended. The result depends on the size, consistency, and relevance of the text you provide.
What remains under your control
- You see each proposed change in context.
- You can accept, adapt, or reject it.
- You decide which deliberate patterns should remain.
- You can review important passages again across the manuscript.
Transparent limits
Where AI editing helps and where human judgment still matters
EPOS can examine large amounts of text systematically, present alternatives, and find recurring problems. It cannot know every unspoken intention. Irony, cultural nuance, market choices, and final aesthetic judgment can require human experience. For publication work with high requirements, combining EPOS with a professional editor can be especially valuable.
The three editing levels are not an automatic approval of a manuscript. They are tools for a more thorough revision. You remain responsible for the text and for every change that reaches the final version.
For authors and publishing professionals
Author workflow
Prepare a draft for beta readers, find recurring issues, or reduce avoidable work before professional editing. EPOS-AI supports the process without taking over the artistic decision.
Publishing workflow
Pro Editing is built for publishers, literary agencies, and freelance editors. It processes a complete manuscript in one run and returns a Word file with tracked changes.
Plans and manuscript context
| Plan | Monthly | Annual | Words per month | Context |
|---|---|---|---|---|
| Starter | 29 USD, EUR, or CHF | 290 | 450,000 | 22,500 words |
| Professional | 59 USD, EUR, or CHF | 590 | 1,125,000 | 60,000 words |
| Studio | 99 USD, EUR, or CHF | 990 | 2,250,000 | 112,500 words |
The trial lasts seven days. A card is required. The allowance is enough for one or two AI requests. You can cancel in one click.
Project storage and data processing
EPOS-AI is a Swiss company based in Lucerne. Permanent project data is stored encrypted on servers in Zug and Zurich. Individual AI requests are transmitted to a commercial model provider. EPOS-AI does not use manuscripts to train its own models, and users can delete their projects.
Frequently asked questions
What is AI editing for fiction?
AI editing uses language models to identify issues in spelling, style, structure, logic, and continuity. EPOS-AI separates these tasks into three levels so authors and editors can choose the depth they need.
Does EPOS-AI replace a professional editor?
No. It prepares a systematic second opinion and concrete suggestions. The artistic judgment and final decision remain with the author or professional editor.
How much manuscript context is available?
The plans provide 22,500, 60,000, or 112,500 words of manuscript context.
How much does EPOS-AI cost?
Monthly plans cost 29, 59, or 99 USD, EUR, or CHF. Annual plans cost 290, 590, or 990.
How does the trial work?
EPOS-AI is free for seven days and can be canceled in one click. A card is required. The trial allowance is enough for one or two AI requests.
Related resources
Choose the right depth for your next task
Bring the full manuscript into one connected workspace.
7 days free. Cancel in one click. A card is required to start the trial.
7 days freeNew focus areas: Voice-preserving AI editing · Pro Editing for publishers, agencies, and editors