GitHub Copilot in brief
GitHub Copilot is GitHub’s AI coding assistant, developed with OpenAI and introduced in technical preview in 2021 before general availability in June 2022. It now supports inline completions, next-edit suggestions, chat, agent mode, code review, pull-request summaries, vulnerability fixes, and a cloud coding agent that can plan work, edit repositories, run tests, and open pull requests. Copilot works across VS Code, Visual Studio, JetBrains, Xcode, Vim, Neovim, terminal, web, mobile, Slack, and Teams. Current model choices include GPT-5.3-Codex, GPT-6 variants, Claude Sonnet and Opus models, Gemini, Grok, Kimi, and others, depending on plan and client. Free access is limited, while Pro costs $10 monthly, Pro+ $39, and Max $100; Business is $19 per seat and Enterprise $39. Cursor, Windsurf, and Claude Code can feel stronger for specialized agent workflows, but Copilot is the best fit for GitHub-centered teams.
A typical Copilot session starts with inline completions or next-edit suggestions, then expands into chat for explaining files, drafting functions, refactoring, testing, and documentation. Agent mode can modify several files and run approved terminal commands, while GitHub’s cloud coding agent researches issues, creates plans, implements changes, runs tests, and opens pull requests. Its strongest advantage is context: repositories, issues, pull requests, Actions, CI/CD, security findings, and review history inform suggestions beyond an editor’s open files. Developers can also use pull-request summaries, Copilot Autofix, custom instructions, prompt files, content exclusion, Spaces, MCP, the CLI, and desktop app across many clients. The trade-off is required oversight: generated code can be inaccurate, insecure, outdated, or license-sensitive, so testing and human review remain essential.
Copilot’s chief strength is its GitHub-centered workflow, connecting inline suggestions, chat, agent mode, code review, pull requests, issues, Actions, security tooling, and repository context across VS Code, JetBrains, Visual Studio, terminal, web, mobile, and other clients. Its multi-model catalog includes GPT, Claude, Gemini, Grok, Kimi, and MAI options, although availability depends on plan, client, feature, and provider. Free and Student tiers impose tighter model and credit limits; Pro costs $10 monthly, Pro+ $39, Max $100, Business $19 per assigned seat, and Enterprise $39, with included AI-credit pools and paid overage controls. Output can be inaccurate, insecure, incomplete, outdated, or license-sensitive, requiring testing and review. GitHub-focused developers should choose Copilot, while editor-first teams should compare Cursor or Windsurf, and terminal-oriented users should consider Claude Code.