GitHub Copilot

GitHub Copilot is an AI pair programmer that autocompletes code, generates functions, explains and refactors code, writes tests, and can even plan and implement changes as an agent working in your editor or the cloud.
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Core features
Autocomplete-style suggestions for entire lines, blocks, and functions in many languages and frameworks.
​Natural-language prompts in comments to generate implementations, algorithms, or API integrations.
​Copilot Chat in the IDE to explain code, suggest fixes, generate unit tests, and answer general dev questions.
​Agent mode in the IDE to autonomously edit multiple files, run commands (with approval), and complete tasks you describe.
Coding agent in the cloud that can be assigned GitHub issues, spin up an environment, push commits, and open draft PRs for review.
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Key tools it offers
Copilot in IDEs (VS Code, JetBrains, Visual Studio, Neovim) for inline completions and chat.
​Copilot Chat modes: Ask, Edit, Agent, and Plan for Q&A, guided edits, autonomous work, and implementation planning.
​Copilot CLI to get command suggestions, explanations, and automated shell workflows using natural language.
​Copilot on GitHub.com and in Desktop for PR reviews, code explanations, and auto-generated commit messages.
​Copilot Spaces to organize code, specs, and docs into contexts that ground Copilot’s answers for specific tasks.
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Benefits for users
For individual developers: Reduce boilerplate, learn unfamiliar APIs faster, and offload repetitive coding and test-writing tasks.
​For teams & orgs: Improve consistency, accelerate feature delivery, and let agents handle scoped tasks while humans focus on architecture and review.
For new learners & junior devs: Get in-line explanations, examples, and tests that speed up learning while working in real projects.