Google’s Gemini 2.5 Pro and Anthropic’s Claude Sonnet 4.6 are now available across Write, Draft, and Plugins.
If you’ve been paying attention to the AI landscape lately, you’ll know that the pace of new model releases has been relentless. The good news: the best of those releases are now making their way directly into your writing workflow. Sudowrite has just added two of the most capable new models available. Both are ready to use right now.
Gemini 2.5 Pro: A Massive Context Window and a Fresh Creative Voice
Google’s latest flagship model, Gemini 2.5 Pro, is now live in Sudowrite. It brings strong creative range and fast, reliable output, making it a compelling option for writers who want to experiment with a different voice or stylistic sensibility.
What really sets Gemini 2.5 Pro apart, though, is its massive context window. If you’re building out Plugins and need a model that can hold a lot of information at once without losing the thread, this is a powerful choice. Whether you’re worldbuilding across a sprawling fantasy epic or managing complex character continuity, that extended context is a meaningful advantage.
Claude Sonnet 4.6: Smart, Efficient, and Easy on Credits
Anthropic’s Claude Sonnet 4.6 is the other major addition, and it’s one that everyday Sudowrite users will likely feel immediately. Built for smart, efficient performance, it delivers quality on par with Opus 4.6 but at a lighter credit cost. That balance of creative output and speed makes it a strong default for most writing sessions.
Whether you’re pantsing your way through a scene in Write mode or generating a full chapter with Draft, Sonnet 4.6 holds up well. If you were a fan of Sonnet 3.7, the team at Sudowrite thinks you’ll appreciate how 4.6 sounds. It carries that same thoughtful, literary sensibility forward.
Both Gemini 2.5 Pro and Claude Sonnet 4.6 are available now in Write, Draft, and Plugins. You can switch between models directly from the interface to find the voice that works best for your project.
Two Other Updates Worth Your Attention
Beyond the new models, the Sudowrite team has shipped a couple of fixes and improvements that clean up parts of the experience that had been causing friction.
First, the Import Novel feature received an important fix. There was a bug where the import process would occasionally stall midway through or skip the Character creation step entirely, which was a real headache for anyone trying to bring an existing manuscript into a new project. That issue has been resolved.
Second, the Draft tool has been improved to make the overall process more intuitive. Selecting your preferred AI model is now easier, and the workflow itself has been streamlined so that getting from prompt to prose feels smoother from start to finish.
Making the Most of Your AI Writing Setup
With more powerful models available, it’s a good time to think about the full picture of your creative workflow. For writers working on visually rich projects (building a book cover, generating character references, or producing marketing assets for a self-published title), getimg.ai is worth exploring. It offers AI image generation with commercial licensing, so anything you create can go straight into your publishing materials without any legal headaches.
And once your manuscript is ready, getting it into readers’ hands across every major platform is where PublishDrive comes in. It handles distribution for books, ebooks, and audiobooks in one place, letting you focus on writing rather than the logistics of getting published.
What’s Next
The addition of Gemini 2.5 Pro and Claude Sonnet 4.6 continues a steady pattern of Sudowrite expanding the model options available to its users, giving writers more creative flexibility without having to leave the tool they’re already working in. As both Google and Anthropic continue iterating quickly, expect the roster to keep growing.
For now, the best thing to do is simply open a project and try them both. Different models have different voices, and the only way to know which one fits your story is to write with it. This post contains affiliate links. If you sign up through these links, we may earn a small commission at no extra cost to you.