Which AI coding tool works best with JetBrains IDEs?

GitHub Copilot and Codeium both have first-class JetBrains plugins (IntelliJ, PyCharm, WebStorm, etc.). Tabnine also has strong JetBrains support and is popular among enterprise JetBrains users. Cursor is a standalone app and does not integrate into JetBrains. If you live in IntelliJ, Copilot or Codeium are your safest bets.