Shipping prototypes shouldn’t take days. With Cosine’s new Instant Sites, it now takes seconds.

We’ve introduced native deployment inside Cosine, making it possible to turn any generated static site or web asset into a live, shareable URL with a single click. No servers, no configs, no external tools required.

Build and ship in one flow

Previously, Cosine users had to connect to third-party hosts like Vercel to deploy their creations. That extra step – however small – slowed down the iteration loop. Now, we’ve closed the loop. The moment your site is ready, Cosine can deploy it instantly to a live preview domain (like preview.cosine.show) or your own custom domain.

This removes friction from the last mile of the development process: instead of copying code into another tool, waiting on builds, or managing CI pipelines, your prototype is live and ready to share as soon as Cosine finishes typing.

Zero setup, full velocity

Instant Sites eliminates the usual overhead:

• No cloud accounts to manage

• No DNS or SSL config

• No CI/CD wiring

Just prompt, polish, and publish. This one-click deployment is purpose-built for fast-moving product teams, solo devs, and anyone exploring ideas with Cosine. It turns our platform into not just an AI coder, but an AI that ships.

Built for developers (and everyone else)

Unlike visual site builders, Cosine keeps the code transparent and editable. Developers can review and iterate on the generated code, while product managers and stakeholders can preview results live. It’s a best-of-both-worlds approach: as easy to share as a doc link, but grounded in real, production-grade code.

Ready for launch

Instant Sites isn’t just for prototypes. You can bind a custom domain and promote your preview to a public-facing site with no migration needed. Cosine scales from mockup to launch without changing tools.

One agent, one URL, one click

This update reinforces Cosine as a full-lifecycle AI engineer: it plans, codes, tests, and now deploys. Whether you’re validating a UI idea or prepping for a stakeholder demo, Cosine handles everything from prompt to live app – instantly.

For a detailed setup guide, check out our docs.

Explore Instant Sites by starting a new front-end task in Cosine. Write the code, click deploy, and your app is live. That’s it.

Welcome to the new standard for prototyping – get started for free now.