What is Calliope?

Calliope is a writing studio built for novelists, offering a distraction-free editor with real book typography, structure tools, and a canon management system called The Map. It includes an AI companion that helps with research, consistency checking, and thinking through scenes, but is designed to never write prose for the user. The product is free to use for the editor, with a metered AI layer that users pay for only when they use it.

How to use Calliope?

Open Calliope and start writing immediately—no account or card required. Use the editor to write your manuscript, then ask the AI to research, check consistency, or think through a scene. Export your finished manuscript in DOCX, EPUB, PDF, or Google Doc formats.

Core features of Calliope

Distraction-free editor with real book typography and warm paper themes
Craft lenses that highlight writing habits (adverbs, filter words, sentence rhythm)
The Map: canon management for characters, places, and facts
AI companion for research with citations and consistency checking
Marginalia: notes, to-dos, and chat pinned to paragraphs
MCP connector to point Claude, ChatGPT, or Cursor at your manuscript
Writer API for scripting against your book data
Writing stats with year heatmap and Writing Wrapped