Where Technology Meets
the Art of Storytelling
EPOS-AI was built by a novelist, for novelists. Swiss-hosted, privacy-first, and built around one obsession: your manuscript.
What EPOS-AI does
EPOS-AI is a specialized AI writing assistant for fiction authors. Unlike generic AI tools built for marketing copy or business emails, every feature in EPOS-AI was designed for the specific challenges of long-form creative writing.
The core problem we solve: General-purpose AI tools offer different project, file, memory, and context features. EPOS-AI connects up to 112,500 words of manuscript context with writing and editing tools built for long-form projects.
Structure & Plot
Build tension arcs that keep readers turning pages. From three-act structure to the hero's journey, EPOS-AI understands narrative shape.
Character Development
Protagonists with real depth and coherent motivations. EPOS-AI can draw on character profiles and relevant details within the manuscript context available in your plan.
Worldbuilding
Create consistent, immersive worlds while keeping relevant rules, characters, and earlier decisions connected within the context limit of your plan.
Critical Feedback
Not a yes-machine, a sparring partner that spots clichés and challenges weak choices. Like a literary editor who has read your whole book.
Why EPOS-AI is different
There are many AI tools, but most are optimised for short-form marketing content. EPOS-AI is a tool built by a creative, for creatives. Our approach is grounded in the principles of classical and contemporary storytelling.
Your writing style is your most valuable asset, EPOS-AI adapts to you, not the other way around. As a Swiss project, we stand for reliability, privacy, and the highest technical standards. Permanent project data is stored on encrypted servers in Zug and Zurich. Individual AI requests are sent to an AI service for processing. We are a Swiss company outside US jurisdiction, we do not use your manuscripts for model training, and you can delete your data yourself at any time.
The person behind EPOS-AI
Marcel Tobien
Founder, Novelist & AI Developer · Lucerne, Switzerland
As a novelist, I experienced firsthand how frustrating continuity problems become when important details are missing from the active project context. I built EPOS-AI not as a tech product, but as the tool I needed when writing my own six-volume fantasy series. Over ten years of experience as an author flow into every feature.
Years as a novelist
Novels written
Swiss company
Our mission
We believe every person carries a story worth telling. Often these stories fail not from lack of talent, but from the friction of the writing process itself.
EPOS-AI is here to remove that friction. We give you the tools to shape a fleeting idea into a finished literary work, your own personal epic.
Ready to write your epic?
7 days free. Cancel in one click. A card is required to start.
Start Writing Free