SGLang v0.5.20 adds Intel XPU support and faster RL rollouts
AISGLang has released v0.5.20, bringing Intel XPU into standard releases alongside RL sampling masks that make rollouts more reliable with up to 52% faster decode. The update also adds Unified Radix Tree SWA branching-point caching, which the project says lifts cache hit rate about 20 points and cuts TTFT by roughly one-third, plus up to 12.5× faster ROCm model loading. New models named in the release include GLM-5.3-Flash, Qwen3.8-Flash-Next, K2 Horizon, Hy4-Preview, FastH3, and VDN-H3.






