7+ Best AI Story Generator Tools for Creative Writers (for 2025)
You know the feeling – you’re sitting at your desk, a blank page staring back at you, and the ideas just aren’t flowing. Or perhaps that annoying writer’s block has built a wall between you and that fantastic story you’ve been itching to tell.
From my novels to my screenplays, I’ve been there many times – often in the middle of the night as that’s when I do my best writing – and I’ve wished there was someone or something I could turn to for feedback or brainstorming plotlines or ideas.
Enter the world of AI story generators – your new best friend for fiction writing!
These new tools are here to help you brainstorm fresh ideas, create relatable characters, and construct compelling plots. They might even help you conquer that three-act story structure or ensure every essential story element is in place!
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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
AI writing tools are gaining popularity among fiction authors, and for good reason. They can be very helpful for outlining, determining story beats, bounding around ideas for characters and plot twists, and even for marketing and business stories!
In this article, we’ll explore the top AI story generators available, ranking them based on features, use cases, pros, cons, and pricing. So, let’s dive in!
What are the Best AI Story Generator Tools?
We’ll go through the options one at a time, starting with my favorite.
If you want to see the top tools in a table format, please click here!
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 an AI-powered writing assistant designed to help fiction writers generate ideas, improve descriptions, and develop their stories.
It offers tools for expanding scenes, rewriting passages, and structuring plots, making it easier to overcome writer’s block and refine your writing.
Top Benefits
- Helps You Overcome Writer’s Block – Get instant AI-generated ideas, story continuations, and plot twists.
- Improves Your Descriptions – Use the “Describe” tool to add rich sensory details and make your writing more vivid.
- Guides Your Story Development – The “Story Engine” helps you plan and structure your book, chapter by chapter.
- Improves Your Writing Style – Rewrite or expand passages with AI-powered suggestions that match your tone.
- Saves You Time – Quickly generate dialogue, scene ideas, or entire story beats without getting stuck.
- Easy to Use – Works inside its own editor or as an extension for Google Docs.
- No Learning Curve – Simple, intuitive tools make it easy for you to start writing right away.
- Helps With Editing – Get alternative sentence structures and more natural-sounding dialogue.
- 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.
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 within Sudowrite.
They also have a great free trial so that you can try out the software before deciding to pay for it!
My Experience with Sudowrite
I decided to ask Sudowrite to create a fictional story about a cat named Mittens who goes to a “cat bar”:
The story it created for me from the above input prompt about the cat named Mittens going to a cat bar was adorable!
I love how Sudowrite really works well for creative writers, with its use of advanced descriptions, vocabulary, and grammar. You can see the first part of the complete story below:
Pros and Cons
Sudowrite is Best For:
- Beginning Creative Writers – Easy-to-use AI helps generate ideas, improve descriptions, and structure stories.
- Writers Who Struggle with Writer’s Block – AI suggestions keep the story moving when you get stuck.
- Writers Who Need Rewriting Tools – Features like “Describe” and “Rewrite” improve sentence flow and style.
- Clean and Family-Friendly Writers – No NSFW content allowed, making it ideal for mainstream fiction.
Bottom Line
If you’re looking for the perfect AI story-writing tool for generating full stories in the easiest way possible, Sudowrite is the answer.
It’s also fantastic for anyone who struggles with word choices and grammar but has a fantastic idea for a fiction story and just needs a bit of assistance to actually get it written. There are many people with disabilities who use Sudowrite and find it very helpful.
Automated keyword suggestions, natural language processing algorithms, and machine learning algorithms help speed up the writing process while providing insight into reader reactions so that authors can tailor their stories to their intended audience.
Its easy-to-use programming language and comprehensive library of resources (they do online webinars weekly!) make it easy to create engaging and fictional stories.
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 the best choice for you if you want to have the most control over your AI story-writing experience.
With Novelcrafter, you can use the program as a place to store all the important information for your story (character descriptions, special objects, different settings and locations, etc.), and then use AI to assist you with creative writing when you want it.
The downside to Novelcrafter is that it’s a bit trickier to use than Sudowrite. You’ll need to have your own OpenRouter key and it can be confusing to choose between all of the different AI models that you can use.
Top Benefits
- Keeps Everything Organized: NovelCrafter lets you sort your books into series and share details across them. This makes it easier to keep track of everything, especially if you’re working on a bunch of stories at the same time.
- Build Your World in One Place: With the Codex feature, you can add in everything about your story’s world—like characters, places, and history. The Codex will keep all the details organized and available to both you and the AI writing models anytime!
- Choose Your Own AI Model: You can connect to different AI models to help you write or come up with ideas. While this can make it trickier to use, it’s also nice to be able to switch between models for different types of writing.
- Saves Money: The tool uses a base monthly payement plus a pay-as-you-go system, which makes it almost always cheaper than going with Sudowrite. You only pay for the AI help when you use it.
- Throw Around Ideas: You can use NovelCrafter’s chat to refine your story ideas. It remembers everything about your story, so you can ask it questions about new plot points and character development (or anything else), and it will give surprisingly good responses and ideas!
Pros & Cons
Novelcrafter is Best For:
Here are my thoughts on who Novelcrafter is best suited for:
- Those Who Want AI Choice – Connects to multiple AI models instead of just one provider (but, this flexibility makes it more complicated to use).
- Experienced and Professional Writers – Ideal for authors who need advanced story organization and long-term planning.
- Writers of Long-Form Stories – Great for series, multi-book projects, and complex world-building.
- NSFW and Dark Fiction Writers – Supports erotic, horror, and other mature themes without restrictions.
Pricing
Novelcrafter’s model is quite different from Sudowrite’s.
NovelCrafter has a subscription-based pricing model, which means you pay either monthly or yearly to use its basic features. Here are the pricing levels:
Scribe: $4/month. The cost of the cheapest subscription provides access to the basic features of NovelCrafter, like organizing your projects, using the Codex, and creating outlines.
If you want to use AI to help with writing, you will need to connect to AI services through OpenRouter. This is separate from your NovelCrafter subscription and is billed based on how much you use it, and which models you choose.
You can start with as little as $5, and since the AI services cost only fractions of pennies per interaction, this initial amount can last quite a while. The levels that allow you to use AI are:
Tinkerer: $8/month. This is the lowest level I’d recommend. I think it will be enough for most people – unless you’re a full-time fiction writer. Please remember that each of these levels will require you to pay for AI models through OpenRouter, in addition to paying for novelcrafter.
Artisan: $14/month: adds in more features for fixing up your stories.
Specialist: $20/month. This adds in collaborative writing features, so you can share your account with other writers.
Bottom Line
If you’re on a tight budget, but still want to try out a specialized fiction-writing AI tool, novelcrafter is a great choice! Just be aware that it will be a bit more complicated to set up than Sudowrite, as you’ll need your own key from OpenRouter.
If you want the most control over your writing, novelcrafter is again the best choice for you – Sudowrite doesn’t give you quite as many options for what you can do with it.
Basically, most experienced or professional fiction writers will prefer novelcrafter, and most beginning fiction writers will prefer Sudowrite!
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 creative writing tool that helps writers organize projects and generate story ideas. It lets users choose different AI models, brainstorm with an integrated chat, and manage multiple documents in one place.
Top Benefits
- Free to Use – No subscription is required!
- Customizable AI Models – Choose from multiple AI providers to find the best fit for your writing style.
- Integrated Chat Feature – Brainstorm ideas and refine your stories by chatting with AI.
- Dynamic Document Management – Keep all your notes, outlines, and drafts organized in one place.
- Flexible AI Settings – Adjust creativity, temperature, and output length to get the results you want.
- Project Export Options – Download your work in different formats like Markdown and plain text.
- Supports NSFW Content – No strict content restrictions, so you have complete creative freedom.
- Designed for Fiction Writers – Get tools that help you develop plots, characters, and immersive stories.
- Community-Backed Development – Enjoy regular updates and improvements 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.
Pros and Cons
Raptor Write is Best For:
- Writers Who Want a Free AI Tool – No monthly subscription required to start writing.
- NSFW and Dark Fiction Writers – No restrictions on mature, horror, or experimental content.
- Writers Who Want AI Choice – Supports multiple AI providers via OpenRouter instead of just one.
- Writers Looking for Learning Resources – Access free AI creative writing courses to improve your craft.
Bottom Line
Raptor Write is a great option if you want a free creative writing AI software. It’s also perfect for anyone who wants to write spicy or horror stories that other AI programs might not let you write (looking at you, Sudowrite!).
4. Plot Drive
Plotdrive
If you’re looking for high-quality AI output that makes writing faster and easier, PlotDrive is a top choice.
It syncs your writing across devices, saves your work in the cloud, and lets you write NSFW, dark, or mature fiction without restrictions.
While it’s more expensive than other tools, it’s worth it for serious writers who want powerful AI-generated writing and organizational tools.
Overview
Plot Drive is an AI story development tool that helps you structure your plot, build strong character arcs, and organize your ideas.
It provides guided frameworks, writing prompts, and planning tools to make storytelling easier and more structured.
Top Benefits
- Helps You Develop Strong Plots – Use the Plot Module to structure your story from beginning to end.
- Improves Your Character Arcs – Keep track of your characters’ development with built-in tools.
- Provides Ready-to-Use Prompts – Get inspiration from a library of writing prompts to spark new ideas.
- Guides Your Story Structure – Follow proven storytelling frameworks to create compelling stories.
- Keeps Your Ideas Organized – Store plot points, character details, and notes all in one place.
- Supports Multiple Story Formats – Whether you’re writing a novel, screenplay, or short story, it adapts to your needs.
- Gives You Step-by-Step Support – Follow a guided approach to crafting stories with clear direction.
- Great for Outlining and World-Building – Perfect if you want a structured approach before diving into writing.
Pricing
Plotdrive isn’t cheap! It’s $39/month if you pay monthly, and about $37 if you pay yearly.
Pros and Cons
Plotdrive is Best For:
- Serious Writers Willing to Invest in Premium Tools – Higher cost, but offers more advanced writing and planning features.
- Writers Who Need Cloud Storage & Multi-Device Access – Save and edit your work from anywhere, on any device.
- Writers Who Use Dictation or Handwriting – Supports speech-to-text and handwritten notes for flexibility.
Bottom Line
I think Plotdrive is a great tool for fiction writers who want a lot of support for their storytelling. Plotdrive helps you structure your story well, and it keeps track of your characters and what happens to them.
5. NovelAI
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 great AI writing tool for people who want to generate story ideas using artificial intelligence. The app offers a wide variety of genres, such as horror, history, and fantasy.
They also provide help with story plots and characters and can even help you write stories in the style of your favorite author!
Top Benefits
- Gives You Creative Freedom – Write without restrictions, including NSFW content (dark, adult, or experimental fiction) if you choose.
- Helps You Continue Your Story – AI generates natural, engaging text to keep your writing flowing.
- Remembers Details Over Time – The Lorebook stores characters, locations, and story elements for consistency.
- Mimics Different Writing Styles – Adjust the AI’s tone or emulate famous authors to match your story’s voice.
- Includes AI Image Generation – Create anime-style illustrations to visualize your characters and scenes.
- Supports Long-Form Writing – Works well for novels, serial stories, and roleplaying text-based adventures.
- Runs on Proprietary AI Models – Optimized specifically for storytelling and fiction writing.
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!
Pros and Cons
NovelAI is Best For:
- Writers Who Want Full Creative Freedom – Supports NSFW, dark, and experimental fiction with no content limits.
- Writers Who Enjoy AI Image Generation – Create anime-style character and scene illustrations alongside your story.
- Roleplayers and Interactive Storytellers – Works well for text-based adventures and collaborative storytelling.
Bottom Line
Novel AI is best for writers who want to use a story generator to help them write a dark, erotic, or other NSFW (Not Safe For Work)-type story. The app offers a wide variety of genres so that you can find the right one for your story.
Novel AI also offers writers the opportunity to create stories with the voice of lauded literary authors such as Arthur Conan Doyle, Edgar Allan Poe, and HP Lovecraft.
6. AI Dungeon
Overview
If you’re looking for an AI adventure story game, then AI Dungeon is worth checking out. It’s an online platform that uses AI to generate endless story possibilities. You type in a prompt, and the AI generates a story based on that prompt.
The story can go in any direction you want, and there’s no limit to what you can create. Plus, it’s completely free to use.
Top Features
If you’re a fan of choose-your-own-adventure novels or role-playing games, you’ll love AI Dungeon. It’s an AI story tool that uses artificial intelligence to generate content on the fly, meaning that no two long-form stories are the same. And best of all, it’s free to use!
Some of the top features of AI Dungeon include:
- The ability to create unlimited content. No matter how many times you play, you’ll always have a new experience.
- A variety of settings and genres to choose from. Whether you want a fantasy adventure or a post-apocalyptic thriller, AI Dungeon has you covered.
- Customizable characters. You can create your own characters or use pre-generated ones; each character has unique stats and abilities that will affect the story.
Pricing
AI Dungeon is free to use!
Bottom Line
AI Dungeon is the perfect solution if you’re looking for an endless supply of entertainment and story ideas. Give it a try today and see where your imagination takes you!
7. StoryLab
StoryLab.ai
OK, StoryLab isn't a traditional AI storytelling software program!
It's more of a specialized AI marketing software that specializes in storytelling for business purposes.
It's fun to check out if you need to do copywriting for your business, and understand the power of storytelling in marketing!
Overview
StoryLab is an AI-powered writing assistant that helps you come up with story ideas and content marketing for businesses.
Top Features
- The app uses a neural network to write high-quality content based on input from the user.
- Get AI output for marketing with a storytelling angle!
- The app is constantly being updated with new features and improvements.
Pricing
The Unlimited version ($19/month) includes unlimited AI runs!
Bottom Line
StoryLab is best for fiction writers who want help with generating ideas and getting their creative juices flowing for marketing and copywriting purposes.
Quick Comparison Table
|
Software |
Ease of Use |
Price |
AI Control |
NSFW Allowed? |
Best For |
Storage Type |
|
Sudowrite |
Easiest to use (no API key needed) |
Medium price |
Less control |
No |
Beginners, family-friendly writing |
Cloud (Sudowrite servers) |
|
Novelcrafter |
Need your own API key |
Cheap to use |
Lots of control |
Yes |
Series writers, detailed world-building |
Local storage |
|
Raptor Write |
Need your own API key |
Free! |
Lots of control |
Yes |
NSFW writers, budget-conscious users |
Local storage |
|
Plotdrive |
Need your own API key |
Expensive |
Lots of control |
Yes |
Fast writing, high-quality AI output |
Cloud storage |
|
NovelAI |
Moderate learning curve |
Subscription-based |
Some control |
Yes |
NSFW, roleplaying, long-form storytelling |
Cloud storage |
What are AI Story Generator Tools?
AI story generator tools are computer programs that use AI to create stories. Writers can use these AI story writing tools to generate ideas for plots, characters, and settings. Many AI story generators also allow users to share their ideas with others and get feedback on their work.
Final Thoughts
So, there you have it – the best AI story generator tools for fiction writers! These programs are great for when you are stuck on character development, world-building, storyline plot points, themes, and even story elements such as story settings and even the conflict that occurs in your story.
Will AI replace human writers? I honestly don’t think so. Why not grab your laptop so you can try one of these story generator tools and see for yourself?
For more AI software articles, check out:
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