Cosine is an AI software engineer powered by Genie 2, our proprietary model built specifically for complex coding tasks. Designed to complete tasks end-to-end without human supervision, it understands your codebase, plans, writes changes, and opens PRs.
Working asynchronously, devs can assign multiple tickets all at once to Cosine, then come back to review and merge PRs. Tackle messy backlogs, fix bugs, and prototype faster without changing workflow.
This is the 3rd launch from Cosine. View more
Cosine VS Code Extension
Cosine for VS Code brings our AI coding agent to your editor. It writes/refactors/tests code, and executes multi-step edits. Using our CLI as the bridge, build with the full power of our agentic workflow. A disciplined teammate that works where you code.
Free
Launch Team
Cosine
Hey Product Hunt! 👋
I’m Yang, co-founder of Cosine (cosine.sh) along with @alistair_pullen. We’re excited to be back on Product Hunt with our Cosine VS Code release!
Over a year ago, we brought Cosine out of the editor and into the cloud. At the time, we were one of the first VS Code extensions that acted as an agent. The choice to step away allowed us to harden our agent for real engineering work – from enterprise controls, deep integrations, and a remote-first workflow that meets teams where they collaborate.
Now, we're back.
💡 What is Cosine VS Code?
Cosine VS Code brings our agentic software engineer right into your editor. Powered by Genie 2, our proprietary model built specifically for complex coding tasks, Cosine completes tasks end-to-end without human supervision.
Using the Cosine CLI as the bridge to the full power of the Cosine platform, we're able to implement advanced tooling that is fast, robust, and customisable to the needs of our model.
Stay in your editor and use familiar workflows. Preview diffs and jump straight to your files. See updates in real time as the VS Code extension auto-connects to our CLI. Build seamlessly, without friction.
🛠️ More than just an extension
The progress from our early VS Code build to now is massive. This new integration brings truly agentic, production-grade coding to where you work.
We’re looking for feedback from devs who maintain large codebases, ship often, pair program, or just those who prefer native workflows.
Get started with Cosine for VS Code by connecting for FREE: marketplace.visualstudio.com/items?itemName=Cosine.cosine-vscode
Follow our docs for a detailed installation guide: docs.cosine.sh/cli/vs-code
And read our full release post: cosine.sh/blog/cosine-vs-code-production-grade-agent
🎁 Grab 1 month of Professional tier access with the code above.
We'll be in the thread all day answering questions!
Product Hunt Wrapped 2025
Congrats on the VS Code launch. End-to-end PRs and async tickets feel perfect for taming backlogs. The CLI bridge bringing full agent power into the editor is smart. How does Genie 2 handle very large monorepos and long context? Keen to try.
Cosine
@alexcloudstar Thanks Alex! Our model is especially designed to work in large, existing codebases. We trained it specifically on 1000s of real engineering tasks so that it acts just like a capable teammate would when given complex problems.
You can also find out more about how it all comes together here: cosine.sh/product
DevQuizzes
Congrats guys, this looks promising! 🎉🚀
Cosine
@madzadev Thanks Madza, hope you get a chance to try it out!
Huge congrats on bringing Cosine back to VS Code! How does Cosine manage code safety or rollback for autonomous changes? @yang_cosine
Migma AI
Congrats on the launch
What’s the right way to use it?
Cosine
@new_user___2952025292cafa8b536cd71 Cosine is best used by linking your GitHub repo and assigning it coding tasks, just like you would to a teammate. You can kick off tasks directly in the Cosine platform or through Jira, Linear, GitHub, or Slack. The Cosine agent then works asynchronously in the cloud. It reads your codebase, writes and tests changes, and creates a pull request for you to review and merge. You don’t need to sit and watch it, hand off the work and come back later to check the results.
We have a great quickstart guide in our docs: docs.cosine.sh/quickstart
@yang_cosine Thank u！
Impressive approacH: training a proprietary model like Genie 2 specifically for complex, end-to-end coding tasks feels like the right bet. The ability to understand an existing codebase and autonomously plan and ship changes (not just autocomplete) sets Cosine apart from the typical “AI pair programmer” tools. Curious to see how it performs on large-scale repos and whether it can truly handle multi-file reasoning. 🚀