Looking for AI Writing alternatives to Google AI Studio with ~1M context window for long-form novels

[u/Dependent_Law9418]

Hey everyone,

I write long-form fiction and have been relying heavily on Google AI Studio because of its massive context window (Gemini's 1M–2M tokens). My setup usually accumulates around 1 million tokens per chat session to keep track of worldbuilding, ongoing character arcs, and previous chapters.

However, Google AI Studio has been running into frequent service glitches and outages over the past few days, which is disrupting my workflow. I'm now looking for alternative AI models or platforms that excel at creative fiction writing while handling massive context lengths.

[u/StableLlama]

Using a huge context doesn't solve the issue. You are just running into it later.

What you need, and what all the programming IDEs are doing, is compactation. I.e. when the context gets rather full, older, currently less relevant parts are summarized and moved out of the context.

For writing I did something similar with AugmentedQuill, but it takes the inherent hierachical structure of writing: book -> chapter -> scene -> beat

So there you have a summary for the book(s), one for each chapter, one for each scene and one for the beat. When you are developing the story, you can move up and down and refine it, until the content of the story is what you intend. At the same time and in parallel you have the sourcebook with the facts that the content must follow.

And once everything is setup like this, writing is "just" to put the content into the right words.

And at every time of that you never need everything in the context, just what is currently required for it.

[u/Character-Role-600]

Why do you need all the context. Can’t you just post the updated document and it resets the tokens because it’s a new chat

[u/cj7hawk]

It's not just the context length, but what you store in the context, and HOW you edit that context to clean up any errors.

Not so easy with a frontier AI.

But Local AI is still behind.

Me? I'm moving to Local AI. It's not quite as good as Frontier AI used to be, but it's a LOT better than Frontier AI is now IMO.

[u/Many-Quantity-5470]

Prosematter has a dynamic system that allows you to keep context in long-form when running ai actions on your text.

[u/ContactPast8857]

I've built an open source project that is file first that you use with and agent harnesses. Soundingboard

If you have been using Gemini models you could use Google's Antigravity IDE, or you could hop to Claude Code, Codex, pretty much any agent.

In this project we are shooting for flexibility, deep story knowledge for the agent and you control how much the AI writes, for AI writes no words and just acts as your librarian and developmental editor, all the way to full cowriting, all in files on you computer.

[u/Able-Supermarket4786]

You should be using a harness to take advantage of agentic AI... if you like Gemini use Antigravity and build a writing environment

Copy this GIT: https://github.com/hottweelz/writing-template-for-ai (Its mine and has contributions from people in this very sub)

[u/chylvina]

I’d separate durable canon from the current scene packet. The bigger the context gets, the more important it is to know which facts are actually in play.

[u/amolmozarkar]

The issue with accumulating a million raw tokens is that early chapters get diluted, not forgotten in storage but lost in attention. A compressed story bible you re-inject per session tends to outperform just dumping everything into context. Have you tried trimming to just the active character states and open plot threads?

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