72.5score
AI book, novel, and screenplay writing platform for drafting and story structure
Full evaluationTools by task · 24 ranked · updated Sep 23, 2026
Best AI tools for writing a book
Writing a book is a ai writing & editing job. The best AI writing tool fits your content type, preserves factual control, supports your voice and review process, and integrates where writing actually happens. The strongest fits right now are Squibler (free tier available; paid plans from $15.83/mo billed annually), Type (free tier with credits; paid subscriptions from $8/mo), ProWritingAid (free tier with monthly, yearly, and lifetime upgrades); Squibler leads because it is best for fiction authors and screenwriters seeking structured, chapter-by-chapter drafting and story continuity management..
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Full evaluationOrder comes from the intent engine and the ToolsRank score. Refine this search in the directory →
How to choose
What to compare for writing a book
The best AI writing tool fits your content type, preserves factual control, supports your voice and review process, and integrates where writing actually happens.
- Draft and edit quality
- Voice and style control
- Citation/fact workflow
- Team review integrations
Frequently asked
writing a book: questions people ask
What is the best AI tool for writing a book?+
Squibler ranks highest for writing a book on ToolsRank (score 72.5). It is best for fiction authors and screenwriters seeking structured, chapter-by-chapter drafting and story continuity management.. Type is the closest alternative, best for creative writers, novelists, and screenwriters drafting manuscript-length stories with character tracking and embedded AI editing. Rankings use public weights and no paid placement.
Is there a free AI tool for writing a book?+
Yes. Squibler, Type, ProWritingAid, DeepL Write offer a free plan or tier. Free tiers usually cap usage, models, or exports, so test the limit that matters to you before relying on one.
How does ToolsRank pick tools for writing a book?+
The intent engine matches the job to the AI Writing & Editing workflow and to each tool's documented use cases, then orders the matches by the ToolsRank score: editorial quality, practical utility, trust, freshness, and measured engagement. Every listed tool has a dossier with evidence links and a review date.
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