GitHub Copilot
Microsoft's AI coding assistant integrated directly into GitHub and popular code editors — the first mass-market AI developer tool, launched in 2021, and still the most widely deployed in enterprise engineering teams. Suggests code completions as you type and can generate functions from comments. Less capable than Cursor for complex multi-file edits but has the advantage of deep IDE integration and enterprise procurement familiarity.
In practice
You're writing a function in VS Code. GitHub Copilot (powered by OpenAI's models) suggests the next few lines as you type, based on the context of what you're building. It's a coding autocomplete that understands your intent. Claude Code is a different approach — more conversational, more autonomous — but Copilot was one of the first mainstream AI coding tools.
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