vLLM migrates C++ backend to LibTorch Stable ABI

vLLM has migrated its C++ backend and build dependencies to use the PyTorch LibTorch Stable ABI, allowing packages to update PyTorch without requiring vLLM to be rebuilt. The migration addresses binary compatibility limitations, introduces stable C shims and wrapper utilities, and ensures that the entire vLLM CUDA wheel remains ABI stable across PyTorch versions. Open article →