GitHub Copilot is a aI coding assistant integrated into VS Code and JetBrains that suggests code as you type. It handles code suggestions, chat, cli, and multi-language, and it's best suited for developers wanting ai pair programming. It has been around since 2021, giving it a 5-year head start in building out integrations and refining the product.

The free plan is free for open source — enough for most people to evaluate whether it fits. Paid plans start at $10/mo, which unlocks the full feature set. It's aimed at individual users, so it's fast to set up but may lack team-management features if you scale.