Blender C [new] -

In the Blender 2.8x and 3.x era, the codebase was a hybrid of C and C++. As of Blender 4.0, the foundation strongly encourages (specifically C++17) for new code.

Core Blender Development - Springer Nature blender c

The “Blender C” is not a visible feature; it is the silent scaffolding that holds the cathedral together. By choosing C, Blender’s developers prioritized raw performance, deterministic memory control, and cross-platform stability over syntactic sugar or developer convenience. The result is a 3D suite that can handle complex simulations on modest hardware while remaining extensible via Python. As long as computers operate on Von Neumann architecture—with CPUs that understand machine code—C will continue to be the language of Blender’s soul. For the artist, it remains invisible; for the engineer, it is indispensable. In the Blender 2