7+ Best AI Story Generator Tools for Creative Writers (for 2025)

a woman reading an AI storybook

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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!

Neil Chase Film is supported by its readers. When you purchase through links on our site, we may earn an affiliate commission. Thank you for your support!

Best For Beginners
Experienced Writers
Best Free Option
Premium Features
Starts at $10 per month
Starts at just $4 monthly
Free!
$39 per month
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
Best For Beginners
Starts at $10 per month
List of Features:
No API Keys Needed
Won't write NSFW content
Easiest to use!
Story Engine for outlining
Best for beginning writers
Experienced Writers
Starts at just $4 monthly
List of Features:
Need your own API keys
Writes NSFW content
Codex stores all story-related elements
Best for experienced writers
Best Free Option
Free!
List of Features:
Need your own API keys
Writes NSFW content
Organizes your documents
Access to AI-writing courses
More complicated to use
Premium Features
$39 per month
List of Features:
Need your own API keys
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

Best AI Creative Writing Software For Beginners
Sudowrite Sudowrite
Starts at $10 per month

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.

We earn a commission if you make a purchase, at no additional cost to you.

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.

Sudowrite homepage

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.
Sudowrite Recent Updates (2025)
  • 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 pricing credits

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”:

Sudowrite example

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:

Sudowrite story beginning

Pros and Cons

Sudowrite Pros

  • Easy to Use – Beginner-friendly interface with simple AI tools.

  • Great for Writer’s Block – AI helps generate ideas, expand scenes, and continue stories.

  • Story Engine for Plotting – Helps plan chapters, character arcs, and structure.

  • Works in Google Docs – Can be used within Google Docs for added convenience.
  • Subscription Includes AI Access – No need for external API keys.
Sudowrite Cons

  • Subscription-Based – Requires monthly payments, no lifetime purchase option.

  • Limited AI Control – Less customizable compared to NovelCrafter or Raptor Write.

  • No NSFW Content – Restrictions on erotic, horror, or dark fiction.
  • No Cloud Sync Across Devices – Work is stored online but does not auto-sync between devices.

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.

RELATED: You can read the full short story about Mittens at the ‘cat bar’ and check out my Sudowrite review in my Sudowrite Review.


2. Novelcrafter

Best for AI-Assisted Creative Writing
Novelcrafter Novelcrafter
Starts at just $4 monthly

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.

We earn a commission if you make a purchase, at no additional cost to you.

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.

novelcrafter homepage

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 Pros

  • Great World-Building Tools – The Codex keeps story details organized.

  • AI Model Flexibility – Choose from multiple AI providers via OpenRouter.

  • Strong Long-Form Support – Great for series and multi-book projects.

  • More Control Over AI – Adjust AI settings for tone and output.
  • Allows NSFW Content – No restrictions on dark, erotic, or mature themes (like Sudowrite has).
NovelCrafter Cons

  • No Built-in AI – Requires your own external API keys for AI access.

  • Steeper Learning Curve – More complex than Sudowrite’s simple interface.

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 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

Best Budget AI Creative Writing Software
Raptor Write Raptor Write
Has a Great Free Option! Also has a one-time payment option if you want to use additional AI models (like Claude).

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.

We earn a commission if you make a purchase, at no additional cost to you.

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.

Raptor Write Homepage

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 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 Pros

  • Completely Free to Use – No monthly subscription required.

  • Supports NSFW Content – No restrictions on mature or dark themes.

  • Choose Your AI Model – Works with multiple AI providers via OpenRouter.

  • One-Time Upgrade Option – Pay once for advanced features instead of subscribing monthly.
  • Get Access to a Great Writer’s Community and Free Courses!
Raptor Write Cons

  • No Built-in AI – Requires external API keys for AI use.

  • Requires Some Learning – Not as easy to use as a program like Sudowrite.

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

Syncs to All Your Devices!
Plotdrive Plotdrive
$39 per month (or $37 if you pay yearly)

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.

Plotdrive homepage

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 pricing

Plotdrive isn’t cheap! It’s $39/month if you pay monthly, and about $37 if you pay yearly.

Pros and Cons

Plotdrive Pros

  • Cloud Storage & Multi-Device Access – Write and save your work from anywhere on any device (Plotdrive is the only AI creative writing program to truly do this!).

  • Strong Story Structuring Tools – Helps you plan plots, character arcs, and story beats.

  • Customizable – Adjust the layout and features to match your workflow.

  • Dictation & Handwriting Support – Speak or write by hand to capture ideas faster.

Plotdrive Cons

  • More Expensive Than Other AI Tools – Subscription cost is much higher compared to competitors.

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

Good For NSFW AI-Assisted Writing
NovelAI NovelAI
Starts at $10 per month

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!

Novel AI home page

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

Novelai 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

Novel AI Pros

  • Supports NSFW Content – No restrictions on dark, erotic, or mature themes.
  • AI Memory for Long Stories – Lorebook keeps track of characters, settings, and world details.
  • Includes AI Image Generation – Generate anime-style character and scene illustrations.
  • Great for Roleplaying and Serial Stories – Works well for interactive storytelling and long-form fiction.
Novel AI Cons

  • Weaker Editing Features – No grammar or style suggestions.

  • Less Intuitive for New Writers – More sandbox-style, requiring manual setup for structured writing.

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

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

Best AI Tool for Storytelling in Marketing
StoryLab.ai StoryLab.ai
Get their Unlimited Plan for $19 per month

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.

StoryLab homepage

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

StoryLab 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?

infographic about story generators

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?

Best AI Story Generators pin

For more AI software articles, check out:

7+ Best AI Video Upscaling Software (Free & Paid)

11+ Best AI Novel Writing Software Tools

5+ Sudowrite Alternatives for Creative Writers

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