Even More New Models: Sonnet 5.5, Gemini 3.7 & 3.8 and More

Claude Sonnet 5.5 launched today, and we’ve already made it available in Sudowrite. It's Anthropic's new mid-tier model, and it carries over some of the creative writing improvements we saw in Opus 5.5 (which we added last week). In our testing, it's about 30% faster and 30% cheaper than Opus 5.5.

We've also added several of the most-requested models from our community:

• Gemini 3.7 Flash and 3.8 Flash are Google's latest fast models. These brainy boys can handle a huge amount of text at once, which makes them great in Draft and especially strong in plugins that work across your full manuscript.

• GLM 5.3 is Z.ai's new flagship. It writes consistently solid prose and scores near the top of creative writing benchmarks. It's also one of the least repetitive models in testing, so try it for those long Draft sessions. GLM 5.3 Flash (formerly Ox Alpha) is the lighter, faster version.

• Qwen 3.8 Max is Alibaba's top model. Try it when you want a completely different-sounding voice on the page.

• Grok 4.7 is xAI's latest. Reach for it when you want strong prose that can handle no-holds-barred spice or violence.

Every model has its own strengths and weaknesses. Our goal is to make as many as possible available in Sudowrite, so you can find the right model for whatever it is you're working on. (Different pens for different pages!)

You'll find all these new models in the Prose Mode selector in Write and Draft, and in Plugins too. Let us know what you think, and which ones earn a spot in your regular rotation.