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What is the best AI for writing fiction novels?

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I’ve been brainstorming a high-fantasy series, but I’m struggling to keep my world-building and character arcs consistent across multiple chapters. I've messed around with ChatGPT, but it seems to lose the plot after a few thousand words. I’m looking for an AI that specifically excels at long-form fiction, handles creative prose without being too repetitive, and has a strong 'memory' for story bibles. I'm curious about tools like NovelCrafter or Sudowrite, but I'm not sure which one is better for actual drafting versus just outlining. Does anyone have experience using these for a full-length novel, and which one feels the most intuitive for a creative writer?


14 Answers
17

Memory relies on context windows, so I agree NovelCrafter rules for lore! Curious about one thing: how many pages of notes are we talking for your world-building bible?


17

Following


16

🙌


12

Seconding the recommendation above! Honestly, keeping costs down is huge when you're drafting 80k+ words. I've found that using a dedicated interface where I pay only for what I use - rather than a flat monthly sub - saves me a ton of cash.

* Use a 'pay-as-you-go' API setup to avoid those $20/month fees
* Keep your story bible lean so you aren't paying for massive context every time

It's been a total game-changer for my wallet and my word count!


11

Sooo I went through this exact same headache last year while trying to finish my 120k word epic. Honestly, I spent way too much time hopping between tools because I was terrified of the costs spiraling out of control once the word count hit the stratosphere. I eventually settled into a workflow that's been much kinder to my wallet.

I actually moved away from the monthly subscriptions like Sudowrite because, tbh, the 'credits' system always made me feel anxious about 'wasting' money on bad drafts. Instead, I started using NovelCrafter paired with OpenRouter to access different models. It was a game changer for my budget cuz I only pay for the exact tokens I use. Ngl, some months when I'm just world-building and not drafting, my bill is literally like $2. If I'm heavy into drafting with OpenRouter - Anthropic: Claude 3.5 Sonnet, it might go up to $15, but it's still way cheaper than a $30/month flat fee.

One thing to be careful about though... I found that even with a 'Codex' or story bible, you still gotta manually curate ur notes. I tried Rexy by Future Fiction Academy for a bit too, which is cool for specific tasks, but keeping everything organized in one place is what saved my sanity. Just make sure to watch ur usage on those high-end models or the bill can jump fast if ur re-rolling prose constantly!! Anyway, that's just what worked for me to keep the dream alive without going broke. Good luck with the fantasy series, the struggle is real lol 👍


9

Memory relies on context windows, so I agree NovelCrafter rules for lore! Curious about one thing: how many pages of notes are we talking for your world-building bible?


7

For your situation, I've found that NovelCrafter is the absolute move if you're serious about world-building technicalities. Unlike ChatGPT which is basically just a chatbot, NovelCrafter functions like a dedicated writing interface that connects to various models via OpenRouter or Anthropic Claude 3.5 Sonnet. It has a built-in 'Codex' which acts as your story bible; you tag characters and locations, and the AI actually pulls from those specific entries to keep everything consistent.

Sudowrite is also decent for creative prose and has a lower barrier to entry, but it can get pricey if you're burning through credits on long-form drafts. If you want total control over your lore and the ability to swap between models like Meta Llama 3 70B or OpenAI GPT-4o depending on the scene, NovelCrafter is way more robust. It keeps my high-fantasy arcs from falling apart after 50k words, which is a total lifesaver tbh. gl with the series!


7

Ok so I went through this last year! Sticking with Sudowrite helped manage my local data costs:
- Low bandwidth
- Predictable billing

Amazing for long-term consistency tbh, totally worth it!!


3

I've had a pretty rough time with the specialized writing tools lately, so I feel your pain. I agree with the recent comments about context windows being the only real fix because the 'smart' features are usually a letdown.

  • Most story bible features use vector retrieval which is technically just a search tool that misses the actual flow of your story.
  • I found that manual tagging usually makes the AI start repeating itself word-for-word, which is super annoying.
  • Using an API with a massive context window is the only way to keep the AI from forgetting who is actually in the room. Honestly, the middleman apps just feel clunky once you realize they're just filtering the model's actual potential...


3

Bump - same question here


2

Honestly, if you're hitting that wall where the AI forgets your plot after a few chapters, you really need to look at the Google ecosystem. I’ve been experimenting with their latest offerings lately and the context window is just massive compared to what we were stuck with last year. We're talking millions of tokens of "memory," which basically eliminates the need for a complex story bible if you just feed the whole manuscript back in every time. I’m not 100% sure about the exact technical benchmarks for creative prose vs logic yet—there’s some variance in the output quality—but the throughput is pretty solid for long-form drafting. Just get any of the enterprise-grade stuff from Google. It's way more efficient than trying to manage a million different snippets in a separate database, which is something I used to struggle with. It basically keeps the whole narrative arc in active memory. Or well, actually, it's more like a massive cache... wait, no, it's just the native window size. Anyway, it’s what I’ve been using for my latest project and it hasn't tripped up once. Definitely something to look into!


1

Hmm, I've had a different experience. While everyone is talking up the fancy interfaces and subscription tools, I'd actually suggest a different approach—basically, just go DIY. Honestly, I've tried a lot of those specialized apps over the years, and they often feel like they're just adding a middleman that you don't really need for long-form fiction, you know?

In my experience, if you're serious about finishing a full-length novel without breaking the bank, you're better off building your own system. It sounds intimidating, but it's actually pretty straightforward once you get the hang of it.

* **Get a local setup:** Instead of paying for a monthly sub, look into running things locally or through a simple API playground. It gives you way more control over the 'memory' or context.
* **Manual Story Bibles:** Don't rely on the AI to remember your lore. I keep a separate document for my world-building and just paste relevant snippets into the prompt. It's more reliable than any 'Codex' feature I've used, honestly.
* **Focus on the drafting:** Use any solid writing software and just pull in the AI when you're stuck on a scene.

I mean, those other tools are fine, but they get expensive fast when you're hitting 80k words. Plus, sometimes the prose gets kinda... repetitive? If you just use the raw models from big brands like [[BRAND:Google]] or [[BRAND:OpenAI]], you can tweak the settings yourself to keep things fresh. It's a bit of a learning curve, but definitely worth it for the long haul. Just my two cents tho, gl with the series!!


1

Just catching up on this thread and I really have to agree with the point about those massive context windows being a total lifesaver. I spent so much time earlier this year trying to keep a separate wiki for my characters while also paying for a sub I could barely afford. It felt like I was spending more time organizing than actual writing, you know? I finally tried the one with the huge memory that was mentioned and it completely changed my workflow. I dont even bother with a complex bible anymore. I just dump my whole manuscript and my messy brain-dump notes into the chat. It actually remembered a tiny detail about a side character from fifty pages ago that I'd forgotten myself. For a beginner like me, it just feels way more natural to just talk to the tool instead of managing a database. Plus, it saved me a bunch of money since I stopped paying for those extra features I wasnt even using properly.


1

Honestly, if youre looking to save cash while managing a massive fantasy world, you might want to check out Google Gemini 1.5 Pro via their AI Studio. Its basically free for a lot of tiers and that huge context window is a lifesaver for long-form stuff. You dont even really need a complex story bible setup if you just paste your lore at the top of the prompt. It keeps things consistent without charging you per credit like some of the bigger name apps do. For actual drafting, NovelCrafter is definitely the more intuitive interface for a creative writer. It works on a bring-your-own-key model which is way cheaper in the long run than a flat subscription. I usually hook it up to Mistral Large 2 through an API provider. Its a decent option because the prose is less flowery and more grounded, which helps avoid that repetitive AI feel. Just keep an eye on your usage and itll cost you pennies compared to a monthly sub. Let me know if you need any help with the API setup... its pretty straightforward once you do it once.


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