AI Co-Writer
The AI that writes <em>with</em> you, not for you.
Agent Writing
You direct. AI writes.
Describe what happens next in plain English and watch prose stream into your document as ghost text. It never touches your manuscript until you accept. The AI channels your characters' voices, matches your pacing, and respects your world's rules because it reads your World Bible automatically.
Chapter 3: Before the Storm The rain had stopped by the time Hana reached the Starfall Bridge. She paused, one hand resting on the cold stone railing, and looked out across the valley. "You're late," said a voice behind her. She didn't turn. "I had to make sure I wasn't followed."
Edit Proposals
Surgical AI suggestions, not wholesale rewrites.
Both Agent Writing and Reference AI can propose inline edits to your document. Each change appears as highlighted text you can accept or reject independently. Your voice stays intact because every modification requires your approval.
The wind howled through the valley as she drew her blade.
Reference AI
Your research partner that knows your entire story.
Five modes for different creative needs. General Q&A about your project. Brainstorm for generating titled ideas you can save. Structure for plot analysis and hole detection. Research for world-building details with citations. Plot Assist for beat-level guidance.
Context Detection
The AI knows who's in the scene before you tell it.
As you type, Lunafic automatically detects characters, locations, and lore referenced in your prose. No manual tagging required. The AI builds its context window from your writing in real-time, so it always knows what matters.
Subaru paused at the Starfall Bridge, remembering the sky burial rites he had witnessed as a child.
Context Dashboard
See exactly what the AI knows.
A live breakdown of your AI's context window: active characters with compression tiers, injected lore with priority levels, and a token budget visualization. Full transparency into why the AI generates what it does.
Start writing with AI that actually knows your story.
No credit card required · Free tier available