Anthropic's Claude Sonnet 4.6 just released to the public — and it went live in Bubble AI at the same time.

This represents a significant milestone in our partnership with Anthropic. As a launch partner, our team worked closely with Anthropic and provided technical feedback that helped shape the model they're releasing today.

This deployment reinforces the momentum behind our greatest conviction: that the future of software development isn't choosing between AI speed and human control, it's having both.

Why this partnership matters

Being a launch-day deployment partner is about more than just early access. It exemplifies Bubble's position at the intersection of AI and software development and our commitment to integrating and deploying cutting-edge technology quickly. We aren’t just talking about AI capabilities; we're proudly deploying the latest models from leading AI companies on day one.

At Bubble, we believe that AI should accelerate builders, not replace them or leave them stuck with code they can't read. The winning approach combines AI generation for speed with visual development for precision — letting builders move fast while staying in the driver's seat. Working closely with Anthropic to deploy Sonnet 4.6 on launch day shows we aren’t alone.

What's improved with Sonnet 4.6

Anthropic's Sonnet 4.6 brings meaningful improvements across the board for Bubble users. The most noticeable is in the visual design of AI-generated web and mobile apps. In short: They look much better. Sonnet 4.6 takes a more ambitious and sophisticated approach to UI generation, consistently making better style choices. The output is cleaner overall, with particularly strong results in dark mode implementations — the model demonstrates better use of layers and contrast to create more dynamic, polished interfaces. 

We will also be integrating Sonnet 4.6 into the Bubble AI Agent very soon. In our testing, we found that this model makes the Agent significantly more responsive. Expression generation — like creating dynamic content that automatically fills with user data — is up to 4 times faster than previous models. Combined with more efficient token usage, these improvements make the entire app-building experience feel smoother and more immediate, whether you’re generating features, troubleshooting issues, or building workflows.

What this means for you

If you've used Bubble AI before, you'll notice the difference immediately. Apps generate faster, with better quality outputs. The improvements are particularly visible in UI layout, where Sonnet 4.6 produces more sophisticated, production-ready designs.

This matters whether you're building your first prototype or your tenth production app. Faster generation means faster iteration. Better quality means less time editing what AI produces and more time building what makes your app unique.

Plus, Sonnet 4.6 powers app generation across Bubble's entire platform, including native iOS and Android apps built on React Native. Generate a mobile app with AI, then refine it with the same visual tools you use for web. One platform, one backend, all devices.

And because everything is visual — from design to database to workflows — you maintain complete control. When Sonnet 4.6 generates a workflow, you don't get thousands of lines of JavaScript you need to decipher. You get visual logic in natural language that shows you exactly what happens when a button is clicked or a user signs up. 

Understanding what you build doesn’t slow you down, it actually speeds you up. It's what lets you fix issues yourself, make precise changes, and scale with confidence. The time invested in understanding pays back every time AI gets stuck and you don't have to hire a developer to rescue you.

Build with AI when you want to move fast. Edit directly when you need control. Switch between them whenever you need to. The choice is always yours.

Building at the forefront

This is the advantage of building on a platform that's serious about AI: You get access to cutting-edge capabilities as soon as they're available, integrated into a visual builder that gives you complete control. You get the convenience of vibe coding with none of the limitations of code. You get the ability to launch truly production-grade software.