Fastest Way to Write a Book with AI in 2026: A Complete Comparison
In 2026, the question isn't whether you should use AI to write a book, but what is the fastest way to write a book with AI without losing your creative soul. The landscape has shifted from simple text generators to comprehensive "completion-focused" platforms that can take you from a blank page to a finished manuscript in record time.
Whether you are a novelist, a non-fiction expert, or a student working on a thesis, finding a fast way to write a BOOK is about more than just word count—it's about workflow, continuity, and control. In this guide, we compare the top industry contenders to see which tool actually helps you cross the finish line first.
In this guide you will learn
- Why workflow beats raw generation speed every time.
- How major competitors like Sudowrite and NovelAI stack up.
- The specific features that prevent "writer's block" in long-form projects.
- A 7-step workflow to finish a book in under 2 hours.
- Why SidekickWriter is currently the gold standard for book completion.
1. The Core Difference: Generation vs. Completion
Most AI writing tools are built for short-form content: blog posts, emails, or marketing copy. When you try to use them for a 50,000-word book, they often "forget" what happened in chapter one by the time you reach chapter five.
The fastest way to write a book with AI requires a platform that understands context. You need a tool that maintains a "Character Bible," follows a strict chapter-by-chapter outline, and allows you to regenerate specific sections without breaking the entire narrative.
2. Feature Comparison: SidekickWriter vs. The Field
| Feature | SidekickWriter | Sudowrite | NovelAI | ChatGPT / Claude |
|---|---|---|---|---|
| 7-Step Workflow | ✅ Yes | ❌ No | ❌ No | ❌ No |
| My Writing Voice | ✅ Yes | ⚠️ Limited | ⚠️ Limited | ⚠️ Manual |
| Character Bible | ✅ Yes | ✅ Yes | ✅ Yes | ⚠️ Manual |
| Team Collab/Links | ✅ Yes | ❌ No | ❌ No | ⚠️ Shared Chat |
| Citations (Academic) | ✅ Yes | ❌ No | ❌ No | ⚠️ Hallucinated |
| Sequel Creation | ✅ Yes | ⚠️ Partial | ⚠️ Partial | ❌ No |
| Public Sharing | ✅ Yes | ❌ No | ❌ No | ❌ No |
| 21+ Free Tools | ✅ Yes | ❌ No | ❌ No | ❌ No |
3. Leading Competitors in 2026
Sudowrite: The Fiction Specialist
Sudowrite remains a powerhouse for fiction authors who enjoy a "co-writing" experience. It offers excellent tools for "describing" scenes and expanding on sensory details. However, it lacks a structured, end-to-end workflow for non-fiction and academic writing.
NovelAI: The Unfiltered Creative
NovelAI is the go-to for writers who want zero censorship and a highly customizable "storyteller" experience. It’s great for brainstorming but often requires significant manual effort to keep a long-form project on track.
ChatGPT & Claude: The Generalists
While incredibly smart, these tools aren't built for books. You have to manage the outline, characters, and memory yourself. It's rarely the fastest way to write a book with AI because you spend half your time reminding the AI what your book is actually about.
4. Why SidekickWriter Is the Fastest Way to Write a Book
SidekickWriter was built with one goal: Completion. While other tools focus on the "act of writing," SidekickWriter focuses on the "act of finishing."
The 7-Step Workflow
- Main Idea: Start with a concept or use the "Random Idea" generator.
- Writing Style: Define your "Writing Voice" so the AI sounds like you.
- Character Development: Build a detailed "Character Bible" with one click.
- Outline Generation: Create a structured, chapter-by-chapter roadmap.
- Chapter Descriptions: Guide the AI with specific goals for every scene.
- Full Book Generation: Watch the book stream in real-time.
- Refine & Export: Edit inline and export to DOCX, EPUB, or PDF.
This structured approach is the true fast way to write a BOOK. By breaking the process into logical steps, you eliminate the "choice paralysis" that stops most writers in their tracks.
5. Research and Citations (The Secret Weapon)
For non-fiction and academic authors, speed often dies at the research phase. SidekickWriter includes a real-time AI research engine that fetches actual web sources and academic databases, automatically formatting them into APA, MLA, or Chicago style citations. No more "hallucinated" facts.
6. 21+ Free Tools for Every Stage
Even if you aren't ready to commit to a full project, SidekickWriter offers the most comprehensive suite of free writing tools on the market. From Book Title Generators and Blurb Creators to Royalty Calculators and ISBN Barcode Generators, everything you need to publish is in one place.
Final Conclusion: Which Tool Should You Choose?
- Choose Sudowrite if you are a dedicated fiction writer who wants to spend hours polishing every sentence.
- Choose NovelAI if you want an unfiltered playground for dark or experimental fiction.
- Choose SidekickWriter if you want the fastest way to write a book with AI and actually want a finished manuscript in your hands today.
Start Writing Your Book for Free at SidekickWriter.com
Frequently Asked Questions
What is the fastest way to write a book with AI?
The fastest way is to use a "completion-focused" workflow like SidekickWriter's 7-step process. By generating a character bible and a detailed outline before writing, you ensure the AI maintains continuity and stays on track, finishing a full draft in 1-2 hours.
Is there a fast way to write a BOOK for free?
Yes. SidekickWriter offers a generous free tier that includes access to its core workflow and over 21 free writing utilities like title generators and outline builders, making it a highly accessible fast way to write a BOOK.
Can AI write a book with proper academic citations?
Most AI tools hallucinate facts and sources. However, SidekickWriter features a dedicated Research Engine that searches the live web and academic databases, providing real, verifiable citations in APA, MLA, and other professional formats.
How do I maintain character consistency in an AI-written book?
The best tools use a "Character Bible" or "Story Bible." SidekickWriter stores your characters' traits, motivations, and backgrounds in a central database that the AI references during every single chapter generation to ensure they stay consistent throughout the story.
Which export formats are best for self-publishing?
For platforms like Amazon KDP or Apple Books, you should export your book in EPUB or DOCX format. SidekickWriter supports both, along with Markdown and TXT for maximum flexibility.
Target Keywords: Fastest way to write a book with AI, Fast way to write a BOOK Estimated Read Time: 6 min Word Count: ~850 words (approx. 5,000 characters)