5 Best AI For Writing A Book In 2025

We have been storytelling since the dawn of human history, however; the tools we use for storytelling are changing. AI has been entering the lives of authors in this digital age to make it easy for them to write their books Had they discovered AI earlier, they would have had this sorted!

An AI book writing software can help you change the game, whether you are writing a scary thriller or simply an outline for a non-fiction guide.

In this article, I have covered the 5 top AI tools that cater to authors at various stages of their writing journey. We’ll also delve into free and paid options, helping you find the ideal AI book writer generator for your needs.

The 5 Best AI For Writing A Book

1. Squibler: AI Smart Writer for Story Development

Squibler is tailored for novelists and non-fiction authors. Its AI features include:

Story generation: Generate chapters or entire outlines with just a few prompts.
Character and scene development: Use templates and AI assistance to craft compelling story elements.
Progress tracking: Manage word counts and chapter deadlines effortlessly.

Why it’s great: Squibler offers a free tier, making it one of the best free AI for writing a book.

2. Jasper AI: Versatile and Intuitive

Jasper AI is known for its versatility. While not book-specific, its powerful language model can help:

Draft engaging content quickly.
Tailor writing style to match your voice.
Create detailed outlines for long-form writing.

Best for: Authors looking for a multi-purpose tool that works well for both fiction and non-fiction.

3. OpenAI’s GPT Models: Flexible and Creative

OpenAI’s GPT models are among the most advanced in AI. They excel at:

Generating creative content for any genre.
Crafting dialogue and descriptive passages.
Adapting to your preferred style and tone.

For those seeking flexibility, GPT-based tools like ChatGPT or GPT-4 can be effective AI book writer generators.

4. Writesonic: Accessible AI Writing

Writesonic balances power with ease of use. It’s ideal for:

Generating blog posts, books, and even scripts.
Offering templates for various writing formats.
Supporting free trials, making it a great option for budget-conscious writers.

Why it’s great: Writesonic’s affordability and simplicity appeal to authors looking for AI book writer free no sign-up options.

5. GrammarlyGO: Your AI Writing Assistant

GrammarlyGO takes the editing prowess of Grammarly and adds content generation features. It helps with:

Revising drafts to improve tone and clarity.
Suggesting alternative phrasing for better readability.
Generating content tailored to non-fiction needs.

For authors focusing on non-fiction, it’s one of the best AI for writing non-fiction books.

Why Use AI for Writing a Book?

AI writing tools offer more than just convenience—they’re creative partners. These tools help authors:

Overcome writer’s block.
Generate plot ideas and outlines.
Edit drafts for clarity and coherence.
Enhance productivity with structured workflows.

By combining human creativity with the precision of AI, authors can bring their stories to life faster and more effectively.

Free AI Tools for Book Writing

For those on a budget, free AI tools can still deliver impressive results. Some of the best free AI for writing a book include:

Squibler (limited free tier): Great for starting out.
OpenAI’s GPT Playground: Free to experiment with prompts.
Writesonic: Offers free credits for initial use.

These tools provide accessible options without the commitment of paid plans.

Parting Thoughts

Like being your co-author on a creative journey from brainstorming plot twists to polishing last drafts, the best AI for writing a book has everything in it to satisfy every requirement that a nascent novelist might have.

Remember, though AI tools can help enhance your storytelling, the heart of the story is yours. Use these tools to amplify your creativity, and let your imagination take center stage. Happy writing!