11+ Best AI Novel Writing Software Tools (in 2025)
Imagine yourself lounging by the pool as your computer diligently writes your next bestseller while the robot waiter brings you a fresh piña colada, and your flying car sits nearby.
You’re thinking, “Ahhh, goodbye writer’s block, hello literary fame!”
Well, pump the brakes, Hemingway! That’s not exactly what you’ll find in these AI software programs.
Artificial intelligence tools shouldn’t write everything for you, and that’s a good thing because the story itself needs to come from YOU – otherwise, it’s not your story. But they sure can help to guide your way!
As someone who started out with no literary or film contacts, it was tough to get a good quality check of my early screenplays and short stories – and even harder to get help with plotting out the story beats, brainstorming fresh ideas, and overcoming writer’s block.
With that in mind, I’ve tried most of these AI story-generation programs, and they all have some great features. Some are good at outlining, while others are great at describing settings and characters, helping with plot point development, and fleshing out ideas.
Think of the AI writing assistants on this list as trusty sidekicks that are good at brainstorming ideas, giving suggestions for vocabulary and phrasing, and helping with grammar – but not as a replacement for your own creativity and unique storytelling. But hey, who doesn’t want a Robin to their Batman?
That said, let’s take a look at the best AI novel writing software tools for creative writers!
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Best For Beginners
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Experienced Writers
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Best Free Option
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Premium Features
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Starts at $10 per month
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Starts at just $4 monthly
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Free!
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$39 per month
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List of Features:
No API Keys Needed
Won't write NSFW content Easiest to use! Story Engine for outlining Best for beginning writers |
List of Features:
Need your own API keys
Writes NSFW content Codex stores all story-related elements Best for experienced writers |
List of Features:
Need your own API keys
Writes NSFW content Organizes your documents Access to AI-writing courses More complicated to use |
List of Features:
Need your own API keys
Writes NSFW content Syncs across all devices Writes the fastest Saves your prompts |
Won't write NSFW content
Easiest to use!
Story Engine for outlining
Best for beginning writers
Writes NSFW content
Codex stores all story-related elements
Best for experienced writers
Writes NSFW content
Organizes your documents
Access to AI-writing courses
More complicated to use
Writes NSFW content
Syncs across all devices
Writes the fastest
Saves your prompts
What is the Best AI Novel Writing Software?
AI novel writing software uses algorithms to generate new ideas and create new stories. These AI writing software options can be helpful tools for novelists who are struggling to come up with fresh thoughts or who want to explore different genres.
Let’s look at some of the best AI novel writing software tools for writers!
1. Sudowrite
Sudowrite
Sudowrite is the easiest AI writing tool for fiction writers, perfect for beginners or anyone struggling with writer’s block.
Its Story Engine helps plan plots and structure your novel, while tools like "Describe" and "Rewrite" improve your writing.
This family-friendly tool does not allow NSFW content, but it’s great for mainstream fiction, fantasy, and sci-fi writers looking for a creative AI partner.
Overview
Sudowrite is the best overall AI writing program for fiction authors. It’s great for helping with outlining story beats, describing characters and settings, and editing. Think of it as a fantastic AI creative assistant for storytelling.
It’s the original and best AI writing tool for creative writers, and I think it’s worth a try (for free!) for any AI-curious fiction writer.
It also provides insights into how readers react to written content, helping authors understand their audience and make necessary edits. With Sudowrite’s intuitive interface, writers can quickly create outlines, character descriptions, and plot points for fantastic stories!
Top Features
- First Draft: This tool helps you quickly write the first version of your story. It can create up to 1000 words in just a few clicks, which is really helpful when you’re stuck and can’t think of what to write next.
- Brainstorm: If you need ideas for your story, this feature is like having a brainstorming buddy. It gives you lots of options for characters, places, and plot ideas. You’ve always got someone to bounce ideas off of!
- Shrink Ray: This is a neat tool for making a short version of your writing. It can turn your long story into a short summary, a quick blurb, a logline, or even an outline.
- Write and Expand: If parts of your story feel too short or need more details, this feature can help. It adds more information and makes those parts more interesting and detailed.
- Revision Tools: These are tools to help make your writing better. One tool, called Rewrite, can change your sentences to make them sound better without changing your main ideas. Another tool, Describe, helps you write really good descriptions using extra details that make your story come alive.
Pricing
Sudowrite has three plans:
- Hobby and Student plan: It costs $19 a month (or only $10/month if you pay yearly!)
- Professional plan: It costs $29 a month (a better deal!)
- Max plan: It costs $159 a month
All plans are now based on a credit system. The number of credits you use as you write will depend on the AI model that you choose to use (Sudowrite now has different AI model options you can choose between – some will write NSFW content, some are better for romance, etc.).
They also have a great free trial so that you can try out the AI novel writing software before deciding to pay for it!
- New AI Models: Claude 3.5 Haiku and Sonnet models were added for better speed and accuracy.
- Improved Document Navigation: Switch between your documents faster, making your creative writing workflow more efficient.
- Automatic Dark Mode: The program now matches your device’s light or dark mode settings – love this!
- Project Folders: Organize your writing projects with new folder options for better management.
Bottom Line
If you’re a new creative writer looking for an AI tool to improve your storytelling, Sudowrite is a great choice.
It helps with plotting, rewriting, and brainstorming, but know that it won’t generate NSFW material.
You can check out my full Sudowrite review in this article: Sudowrite Review: A Fantastic AI Fiction Writing Tool
2. Novelcrafter
Novelcrafter
For writers who want full creative freedom, NovelCrafter is an AI-powered writing tool that tracks details across multiple books, keeps your world-building organized, and lets you customize your AI experience.
It’s not as beginner-friendly as Sudowrite (you'll need your own API keys to use it), but if you’re writing a long series or need AI memory, Novelcrafter is perfect.
Novelcrafter allows NSFW content, making it a great option for all types of fiction, including dark, adult, or experimental stories.
Overview
NovelCrafter is a writing assistant that helps you build detailed stories with AI-powered tools.
It lets you outline plots, create character profiles, and store world-building details, all in one place.
Top Features
- Helps You Stay Organized – Keep track of your story’s plot, characters, and world-building all in one place.
- Codex for World-Building – Store detailed notes on characters, locations, and story elements for easy reference.
- Flexible Story Outlining – Plan your book with acts, chapters, and scenes to keep your story structured.
- Long-Term Memory Feature – The AI remembers details across your story, making it easier to maintain consistency across a series of novels.
- Works with External AI Models – Connect to OpenAI, Anthropic, or other providers for more AI options.
- Designed for Serious Writers – Ideal for authors who want detailed story planning and creative control.
Pricing
NovelCrafter offers monthly and yearly subscription plans, starting at $4/month for basic features like project organization, the Codex, and outlining tools.
If you want AI-assisted writing, you’ll need to connect to external AI models via OpenRouter, which has a separate pay-as-you-go cost based on usage. AI pricing starts at $5, with interactions costing fractions of a cent.
Here are the subscription tiers:
- Scribe ($4/month) – Basic writing and organization tools.
- Tinkerer ($8/month) – Adds AI writing support (best for most writers).
- Artisan ($14/month) – Includes advanced editing tools.
- Specialist ($20/month) – Enables collaborative writing with multiple users.
Each AI-powered tier requires additional payment for AI use through OpenRouter.
Bottom Line
NovelCrafter is best for professional and experienced writers who need advanced story organization, AI-assisted writing, and long-term memory for tracking details across multiple novels.
It’s also a great choice for NSFW writers and anyone looking for AI-powered consistency in a long-running series of novels or stories.
3. Raptor Write
Raptor Write
Raptor Write is a completely free AI-assisted writing tool that focuses on flexibility, project organization, and AI-powered brainstorming. It does not have as many organizational or world-building tools as other AI software (like Novelcrafter or Plotdrive).
It was developed by the Future Fiction Academy, and they also offer tons of free and paid courses to help writers learn to use AI for fiction writing.
Its big claim-to-fame is that you can use it for spicy and other NSFW content (not safe for work), which is something that many other AI creative writing software tools don't allow.
Overview
Raptor Write is a free AI writing tool that helps you organize your projects and spark new ideas.
It lets you choose different AI models, brainstorm using a built-in chat, and manage multiple documents in one place.
Top Features
- Completely Free – No subscription needed to start writing.
- Choose Your AI – Pick from different AI providers to match your writing style.
- Chat with AI – Brainstorm ideas and improve your story with an interactive chat tool.
- Stay Organized – Keep notes, outlines, and drafts all in one place.
- Control AI Settings – Adjust creativity, response length, and style to fit your needs.
- Easy Export Options – Save your work in Markdown, plain text, and other formats.
- No Content Restrictions – Write NSFW stories or any genre without limits.
- Built for Fiction Writers – Includes tools for creating strong plots and characters.
- Regular Updates – New features added based on feedback from real writers like you.
Pricing
Raptor Write is generally free to use.
However, you can also pay a one-time fee of $79 to be able to use your own API key for different AI models.
Bottom Line
If you’re looking for a free AI-powered writing tool with no content limits, Raptor Write is a great choice.
It’s a great choice for writers who want to explore horror, spicy, or other genres that many AI programs restrict.
4. ProWriting Aid
ProWriting Aid
ProWritingAid is the best editing and grammar-checking software for creative writers!
It checks for all the usual grammar and spelling errors, and it can also help you re-write your text to adjust for tone of voice or style, and can look for overused words in your writing (and will suggest alternatives!).
It also gives you one AI critique of a chapter or text each day (Beta mode).
Overview
ProWriting Aid is chock-full of features designed to help you get your novel from the first draft to the final product. Not only does it have a great character name generator, but it also has templates for each chapter, so you can make sure you hit all the key plot points.
And if you’re worried about your dialogue sounding stilted or your characters feeling one-dimensional, never fear! The AI-powered writing assistant will help you edit your work to ensure it’s the best it can be.
Top Features
ProWriting Aid is an invaluable tool for any novelist. Here’s why:
- It helps identify and correct grammatical errors, ensuring you produce professionally written content.
- It highlights areas where you may have used repetitive or cliche phrases, allowing you to make your writing more original.
- It provides suggestions for alternative words and phrasing, helping you to find the perfect way to express your ideas.
- It checks your spelling and punctuation, saving you time and effort.
In short, ProWriting Aid is a must-have tool for anyone serious about writing a novel. Its AI writing software will help you to write faster, better, and with fewer errors. It’s also fantastic for helping screenwriters write their best stories alongside traditional screenwriting software programs.
- AI Sparks: Offers over 20 tools to help you generate ideas, improve readability, and save time. With Sparks Edit, you can quickly find the right words and fix repetitions. Sparks Continue assists in expanding word definitions and adding analogies.
- ProWritingAid Collaboration: Share your writing and work together in real-time. Named cursors show who is editing, and you can highlight text to add comments directly. Control access by assigning view, comment, or edit permissions.
Pricing
ProWriting Aid Free:
- Ability to edit 500 words at a time
- Use online only
ProWritingAid Premium:
- No word limit
- Available on desktop computers
- Integrate with MS Word Processor, Google Docs, Chrome, and Scrivener
ProWritingAid Premium Pro:
- Get access to their AI writing tool for “sparks” – change tense or person of your story, create dialogue, and create analogies for your story.
Bottom Line
ProWriting Aid is excellent for writers who want AI-powered assistance editing their novels. It’s perfect for catching errors, improving clarity, and ensuring your writing is original.
Honestly, I think that ProWriting Aid is an essential AI writing tool if you’re serious about writing a novel, as it gives so many amazing suggestions for tone and grammar.
5. Grammarly
Grammarly
Grammarly is fantastic for writers as it checks for almost everything you need to have on point - spelling, grammar, passive voice sentence constructions, and it even has a built-in AI program to help you rewrite certain sentences.
It's a great all-around tool to help you make sure your writing is as error-free as it can be.
Overview
Grammarly is a fantastic AI grammar checker for novel writers. While it does not help you with your creative writing, it will help you write grammatically correct sentences by finding all your spelling and grammar mistakes.
Top Features
Grammarly is a fantastic AI writing software tool for the following reasons:
- It uses artificial intelligence technology to help you create grammatically correct sentences in your novel.
- Grammarly can help you to spot errors that you might otherwise miss. This is especially helpful for catching typos, which can easily be overlooked when you’re focused on the bigger picture.
- Grammarly can also help you to improve your writing style and create high-quality content. By pointing out errors and suggesting corrections, Grammarly can help you to develop a more consistent and polished writing style.
- Finally, Grammarly can save you a lot of time in the editing process. Catching errors early on can save you hours of work later on.
- Personalized Voice Profile: Grammarly now creates a unique voice profile for you, helping your writing sound more like you.
- Generative AI Assistance: You can use AI to help compose and rewrite text, generate ideas and outlines, and reply in a personalized voice.
- Improved Plagiarism Checks: Make sure that your work is original with enhanced plagiarism detection across various platforms.
Pricing
For Individuals: The Premium subscription starts at $12 monthly (if paid yearly). It is $20 per month if you pay quarterly and $30 monthly if you pay month-to-month.
For Businesses: Business plans start at $15 per month (paid yearly), and the price increases depending on how many team members you want to include.
Bottom Line
Grammarly is a fantastic AI writing software tool for writers who want to produce error-free writing. It is beneficial for catching typos and grammatical errors and can help you develop a more consistent and polished writing style.
If you’re serious about writing a novel, Grammarly is worth considering for your content creation process.
6. Squibler
Squibler
Squibler is an AI writing program that can create full-length books, novels, and screenplays with just a few clicks.
The software has some fantastic AI tools for novelists and screenwriters that will help you write faster - and it's budget-friendly!
Overview
Squibler is an AI-powered writing tool that helps you create full-length books, novels, and screenplays quickly.
It offers features like story outline generation, AI-assisted editing, and project management to streamline your writing process.
Top Features
- Organizational Tools: Keep your writing projects structured with features like corkboard organization and project management tools.
- AI Assistance: Enhance your writing with AI-generated outlines and manuscripts.
- Collaboration Features: Work with others in real-time, allowing for seamless sharing, editing, and feedback integration.
- Export Options: Easily publish your work in multiple formats, including PDF and Kindle.
- User-Friendly Interface: Enjoy a distraction-free writing environment with customizable options like dark mode for comfortable typing.
Pricing
Squibler offers two main pricing plans:
Pro Plan: Priced at $16 per month (billed annually) or $29 per month (billed monthly), this plan provides unlimited access to all AI writing and image generation features, along with additional benefits like unlimited projects and priority support.
Free Plan: Includes basic features with limitations, such as 6,000 AI-generated words and 5 image generations per month.
Bottom Line
Squibler is a great choice for novel writers who want AI-assisted outlining, organization, and fast drafting tools. However, I do find the other AI writing programs on this list to be better overall.
7. Quillbot
Quillbot
Quillbot is a fantastic AI-based grammar checker, summarizer, paraphraser, and co-writer. It is useful for all kinds of writers, from professional authors to bloggers to students.
Overview
Quillbot is an AI writing software tool that promises to improve your writing. It uses artificial intelligence to provide feedback and suggestions on how to improve your writing. It also has a thesaurus and grammar checker. Quillbot is available as a free online tool or as a paid subscription.
Top Features
Quillbot is fantastic for helping to write a novel – here’s why:
- Quillbot is a great way to get ideas down quickly. Whether brainstorming plot points or writing dialogue, Quillbot can help you get it all down quickly.
- Quillbot is also great for editing your work. It’s easy to make mistakes when writing a novel, and Quillbot can help you catch them before they become too big to fix.
- Quillbot can also help you with your grammar. If you need clarification on a particular construction, Quillbot can give you some suggestions.
In short, Quillbot is an invaluable tool for writers of all levels.
Pricing
Quillbot has four pricing options:
FREE Version! – Includes up to 1200 words in the summarizer (not great for summarizing longer texts)
Pay monthly ($19.99/month) – If you want to pay each month (all paid options include up to 6000 words in the summarizer at a time – for reference, my text was 209 words)
Pay semi-annually ($79.99 every six months) – this works out to $13.33 per month.
Pay yearly ($99.99 annually) – this is by far the best deal, as it works out to $8.33 per month!
Quillbot is an excellent (cheaper!) alternative to Grammarly for spelling and grammar checking. It even has a paraphrasing function and a citation generator! It’s a tremendous all-around writing tool.
Bottom Line
Quillbot is best for novelists who want an AI writing coach to help them with ideas, editing, and grammar. It’s also great for writers who want a cheaper alternative to Grammarly.
8. ReRead
Overview
ReRead.ai is the perfect AI tool for any writer looking to take their manuscript to the next level. By comparing your novel against best-selling books, ReRead helps you identify what’s missing and where your story could be improved. The reports are packed with insightful recommendations to help you improve your book.
Top Features
ReRead is fantastic for helping to write a novel – here’s why:
- ReRead gives you a ‘parts of speech’ analysis, letting you know where to improve your grammar.
- It maps out your sentences to show if they are generally too long, too short, or just right!
- ReRead knows the importance of great dialogue. This AI writing tool will tell you if your novel has too much conversation, too little, or if it is just right!
- It will even provide overall editorial suggestions for your novel where appropriate.
Pricing
ReRead is free to try!
Bottom Line
ReRead is fantastic for authors looking for a cost-effective manuscript analysis service. It is a great way to compare your novel against previously published best-sellers!
9. Novel AI
NovelAI
NovelAI is a great AI creative writing option if you want to be able to write dark or erotic fiction with the help of AI. It's one of the best programs for writing this sort of content.
It will also create fantasy-style images of your story characters right in the program.
Overview
NovelAI is a powerful AI writing tool that helps you generate story ideas and develop plots in a variety of genres, including horror, history, and fantasy.
It also lets you create AI anime character images and even mimic the writing style of famous authors.
Top Benefits
- Write Without Limits – Supports NSFW, dark, adult, and experimental fiction, giving you full creative freedom.
- Keeps Your Story Going – AI generates natural, engaging text to help you maintain flow and momentum.
- Remembers Your World – The Lorebook stores characters, settings, and key details, ensuring consistency in long stories.
- Adapts to Your Style – Customize the AI’s tone or mimic famous authors to match your writing voice.
- Includes AI Art Generation – Create anime-style illustrations to bring your characters and scenes to life.
- Perfect for Long-Form Writing – Ideal for novels, serial storytelling, and roleplaying adventures.
Pricing
The Paper tier includes a free trial of NovelAI – with 100 free AI generations.
The Tablet tier ($10/month) includes access to Euterpe, their best AI Storyteller, and 1024 tokens of memory.
The Scroll tier ($15/month) includes everything from the previous tier plus 2048 tokens of memory.
The Opus tier ($25/month) includes access to all of the AI Storytellers and access to new and experimental features!
Bottom Line
If you’re looking for an AI-powered writing tool that supports NSFW, dark, or erotic fiction, NovelAI gives you full creative freedom.
It also lets you write in the voice of legendary authors, making it a great choice for fans of mystery, horror, and gothic storytelling.
How to Choose an AI Novel Writing Software
Navigating the buzzing world of AI novel-writing tools? It’s like being a kid in a candy store, but with so many shiny wrappers, it’s easy to get a little overwhelmed. If you’re scratching your head, wondering which tool will be your new best friend, here are some no-nonsense pointers to guide you.
- Cost: Let’s talk money. Some AI tools give you a taste for free, while others reserve the juiciest bits for those willing to shell out. Before emptying your pockets, ask yourself: Is this genuinely adding value to my writing?
- Purpose-Driven AI Development: Just like we writers have our niches, so do these tools. Some cater to the whimsical worlds of fiction writers, helping to create enigmatic characters and interesting plots. In contrast, others are the sidekicks of marketers, polishing copy to a brilliant shine.
- Purpose (Story vs. Syntax): Why did you start this hunt? If you’re looking to weave tales of intrigue and wonder, lean towards story-driven tools (i.e., Sudowrite). But if it’s all about dotting those ‘i’s and crossing those ‘t’s, a grammar guru might be your best choice (i.e., ProWriting Aid or Grammarly).
- Ease of Use: There’s nothing worse than a tool that feels like you’re trying to crack the Enigma Code. Opt for something that feels like an extension of your creative brain, not a hurdle to it.
- Support and Fellow Writers: A responsive helpdesk can be a lifesaver. And a buzzing community? That’s the cherry on top! Sharing the highs, the lows, and the “how on earth do I use this feature?” moments can make all the difference.
Final Thoughts
If you’re a writer, you should check out some of the best AI writing software tools to help with your next book or audiobook.
While these programs are not designed to write the whole novel for you, they can make the process easier and help you get over writer’s block!
These programs are designed to help you with everything from plot development to character creation, and they can be a huge time-saver.
Try out one of these programs today and see how your writing process becomes much easier and faster!
Looking for more fantastic AI tools to enhance your creativity? Check out these articles:
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