Built by GitHub and Microsoft for individual developers and enterprise engineering teams.

Suggests inline completions, chat answers, and autonomous PR-generating agent tasks inside editors and on GitHub.

Runs as an extension in VS Code, JetBrains, Neovim, Visual Studio, and directly on github.com.

Launched in 2021 and has continually expanded with agent mode and coding agent features through 2026.

Reduces boilerplate typing and speeds up everyday coding and pull request creation.

Requires a GitHub account and Copilot subscription, and connects to GitHub-hosted or partner large language models.

Commercial subscription product, closed source, sends surrounding code context to GitHub and model provider servers for suggestions.