FireQuill vs NovelAI

FireQuill is a web-based long-form writing system for novels, non-fiction, podcasts, documentaries, games, and musicals. It combines a story bible with generation that tracks characters, continuity, and voice. Its character engine follows characters’ voice, psychology, knowledge, relationships, and arc scene by scene, then proposes changes for the writer to accept or reject. Eight specialist validators cover developmental and line editing, plot, continuity, argument, evidence, counterargument, and audience fit; they flag issues rather than rewriting text. Non-fiction writers can upload PDFs, documents, and notes so chapters can draw on retrieved passages. Export options include Markdown, Word, EPUB, KDP-ready EPUB, print PDF, Fountain, Final Draft, and libretto formats. The free plan is free for two projects and has no AI. Companion costs $10 a month; Author is $20 a month; Studio is $30 a month. Audiobook and podcast narration are pay-as-you-go add-ons on any paid plan. FireQuill says it does not sell user content or train public models on it, but sends relevant writing to AI providers when users request generation or checks.

NovelAI combines AI-assisted story writing with anime image generation and is available on the web, Android, and iOS. Its NovelAI Diffusion V5 generator can produce original characters, scenes, artwork, and full comic pages. Image controls include natural-language prompts, tags, character positioning, and action tags; separately defined characters can remain consistent across scenes. Inpainting, Director Tools, and a built-in canvas support image refinement. The homepage identifies GLM 4.6 as the model behind story generation, and the product supports long-form writing. The Paper trial includes 30 image generations, 50 text generations, and 100 text-to-speech generations. Paid plans start at $10 a month: Tablet and Scroll each include 1,000 subscription ImageAnlas, while Opus costs $25 a month and includes 10,000 subscription ImageAnlas and a 28,672-token context size. Anlas can also be purchased on demand for image generation. NovelAI says users retain ownership of created content and encrypts stories, lorebooks, scripts, and prompt chunks in the browser before saving.