# Is Cosine an autonomous software engineer or a copilot?

**Cosine is an autonomous software engineer, not a copilot.** While copilots assist developers as they type, Cosine acts as a fully independent teammate that can take a task, plan a solution, write and test the code, and deliver a pull request without constant human supervision.

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### The difference in mindset

A **copilot** (like GitHub Copilot or Cursor) helps you write code faster *while you work*. It suggests snippets, autocompletes functions, and provides inline help. But you still do the thinking, testing, and coordination.

Cosine flips that dynamic. It’s built for **autonomous execution**, meaning you can:

* Assign it a task (via Jira, GitHub, or Slack)
* Let it plan and execute asynchronously
* Return later to a ready-to-review PR

This isn’t a faster autocomplete — it’s a parallel teammate.

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### Why autonomy matters

* **Async scale**: Copilots boost individual productivity. Cosine boosts *team throughput*, handling dozens of tickets in parallel.
* **Focus**: Engineers can concentrate on complex, high-value work while Cosine manages repetitive maintenance and backlog items.
* **Quality control**: Every task goes through a test–validate–review loop before surfacing results.
* **Enterprise readiness**: Copilots typically rely on hosted LLM calls. Cosine can run fully on-prem or in an air‑gapped environment.

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### When teams use both

Many customers use copilots *and* Cosine together:

* Copilot for **micro‑level** productivity (inline code suggestions)
* Cosine for **macro‑level** productivity (autonomous delivery of issues, features, and refactors)

It’s like the difference between a spell‑checker and a co‑author.

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### Real‑world example

A trading platform team used Copilot for their day‑to‑day development, while Cosine handled maintenance of a Fortran‑based transaction service. Cosine autonomously fixed bugs, modernized functions, and submitted PRs that engineers later reviewed and merged — work that would otherwise have been deprioritized.

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### Related pages

* [How does Cosine work?](https://docs.cosine.sh/~/revisions/EEDgImat7fvMa1mEOxHy/faqs/getting-started/how-does-cosine-work)
* [What tasks can Cosine complete end‑to‑end?](https://docs.cosine.sh/~/revisions/EEDgImat7fvMa1mEOxHy/faqs/technology-and-quality/what-tasks-can-cosine-complete-end-to-end)
* [How does Cosine handle security, privacy, and IP?](https://docs.cosine.sh/~/revisions/EEDgImat7fvMa1mEOxHy/faqs/security-and-compliance/how-does-cosine-handle-security-privacy-and-ip)

→ Next: [What tasks can Cosine complete end-to-end?](https://docs.cosine.sh/~/revisions/EEDgImat7fvMa1mEOxHy/faqs/technology-and-quality/what-tasks-can-cosine-complete-end-to-end)