What is GitHub Copilot?
Copilot's real advantage is not its model quality; competitors match or beat it depending on the week. It is distribution and the GitHub graph. Built by GitHub (a Microsoft subsidiary), it launched in 2022 as autocomplete and is now inline suggestions, chat, autonomous agents, and issue-to-pull-request flows. The reason to pick it over a sharper standalone tool is that it already sees your issues, PRs, Actions, and review history, and it ships with IP indemnification a procurement team will ask about. Pick Copilot when that integration and that paperwork outweigh raw capability. Pick a specialist when they do not.
Key features
- Inline completions: context-aware suggestions, GPT-4o by default with other models selectable
- Copilot Chat: in-IDE assistant for questions, debugging, and explanations
- Agent mode: autonomous task completion that edits files, runs terminal commands, and iterates
- Multi-IDE support: VS Code, JetBrains, Neovim, Vim, Xcode, Eclipse, and more
- Model selection: GPT-4o, Claude Sonnet, Gemini, and others, so model lock-in is not the risk it looks like
- GitHub integration: the actual moat. Issues, PRs, Actions, and code review wired in by default
Who is it for?
Teams already living inside GitHub, enterprises that need policy controls and IP indemnity, and polyglot developers who switch IDEs and do not want to relearn an assistant each time. The pull is gravitational, not technical: if your work already happens in GitHub, Copilot wins on day one because the context is already there. If it does not, that advantage evaporates and a specialist coding tool is the better call. The free tier (2,000 completions a month) is enough to settle which case you are in before paying.
Pricing
Free tier: 2,000 completions and 50 chat messages a month. Pro is $10/mo, Pro+ $19/mo. Business is $39/user/month and adds admin controls, policy management, and IP indemnity, which is the line item that decides it for most enterprise buyers regardless of the per-seat delta.