GitHub Copilot

Copilot is useful inline autocomplete — it predicts the next few lines of code with reasonable accuracy. For boilerplate, test cases, and repetitive patterns, it saves keystrokes.

It's not an agent. Copilot doesn't understand your project structure, can't run commands, and doesn't maintain context across files. For sustained implementation work, agentic tools like Claude Code are fundamentally more capable. Copilot fills a different, narrower niche: fast autocomplete while you're actively typing.