Carmack has been known to donate to various open-source projects and developers whose work he appreciates, although specific details and amounts are often not publicly disclosed.

Carmack actively supports STEM (Science, Technology, Engineering, and Mathematics) education initiatives, particularly those focused on encouraging young people to pursue careers in computer science and engineering. He believes in fostering the next generation of innovators and problem-solvers.

Carmack's work on AGI through Keen Technologies can be seen as a form of philanthropy, aimed at advancing artificial intelligence for the benefit of humanity. His investments in space exploration and other cutting-edge technologies reflect a long-term vision for improving the world.