Plotheus never charges you for AI. Here's how the model works.
Plotheus organizes your story world into structured context. When you're ready to write with AI help, you take that context to your own AI account. We never store your AI account credentials, never charge for AI usage, and never sit between you and your AI provider.
Any AI that accepts text input works with Plotheus. Popular choices include:
Plotheus itself is free. AI costs depend on your provider. Most offer a free tier that works well for short sessions. For longer writing sessions or larger context windows, paid tiers typically cost $10-20/month. You pay your AI provider directly.
Some AI tools support the Model Context Protocol (MCP). Connect one to your story's MCP endpoint with an agent credential (Settings, Agents tab) and it can pick up jobs, read the assembled context, and write prose on review branches you approve. The AI still runs entirely on your own account; Plotheus only serves your story data and never sees your AI provider credentials. Copy-paste above remains the simplest path.