There are currently two supported versions of Xpilot-AI:
Xpilot-AI 1.0 based on XPilot Classic 4.5.5
Xpilot-ng-AI 0.9 based on XPilot NG 4.7.3

Both versions support C, Java, Python, and Racket (previously PLT Scheme).

For more information on Xpilot-AI and XPilot itself, see our versions page.