GitHub Copilot

What it does

GitHub Copilot is the most widely deployed AI coding assistant, with autocomplete, chat and agent modes across VS Code, JetBrains and Visual Studio. Its knowledge of mainstream stacks is unmatched.

Copilot Chat explains unfamiliar legacy code — handy when inheriting a supplier's export script. Free tier exists; Pro unlocks premium models and higher limits.

Standout features

• Autocomplete trained on the world's code
• Chat and agent modes in the IDE
• Explains legacy code in place
• Free tier plus Pro plans

Best for