vLLM + Ray is a powerful combo for post-training.
OpenRLHF is a pioneering framework to use vLLM for RLHF, driving many design and implementation of vLLM's features for RLHF, making vLLM a popular choice for many RLHF frameworks. Learn more about the story at blog.vllm.ai/2025/04/23/ope…