Official Tools & Extensions

Official

SGLang Router

Data-parallel request router distributing requests across worker instances with cache-aware routing.

Official

SGLang Diffusion

Extension for accelerating video and image generation using diffusion models (Jan 2026).

Official

sgl-kernel

Standalone package of optimized CUDA/Triton kernels: attention, MoE, quantization, and sampling.

Official

SGLang-Jax

JAX backend enabling SGLang to run natively on Google TPUs (Oct 2025).

Official

Benchmark Suite

Built-in tools for measuring throughput, latency, and TTFT under various workload patterns.

Community Ecosystem

Grammar

XGrammar

Default grammar backend for constrained decoding. High-performance JSON/regex/EBNF generation.

Attention

FlashInfer

Primary attention kernel library. Optimized prefill and paged decode on NVIDIA GPUs.

Grammar

Outlines

Alternative grammar backend with regex-based generation and different grammar compilation approach.

Grammar

llguidance

Microsoft's grammar backend for complex grammar compositions and constrained decoding.

Common Integration Patterns

SGLang + LangChain / LlamaIndex

SGLang's OpenAI-compatible API enables drop-in integration. Point the framework's base_url at your SGLang server and benefit from RadixAttention with zero code changes.

SGLang + Kubernetes

Deploy as a Kubernetes Deployment with GPU resource requests. Use /health for liveness/readiness probes. Official Docker images have all dependencies pre-installed.

SGLang + Prometheus / Grafana

Enable --enable-metrics to expose Prometheus-compatible metrics. Build dashboards to monitor throughput, latency, cache hit rates, and memory usage in real-time.

SGLang + LoRA Adapters

Serve multiple LoRA adapters on a single base model with dynamic per-request switching. Enables multi-tenant deployments with fine-tuned adapters per customer.

Drop-in Replacement Because SGLang speaks the OpenAI-compatible API, you can swap it in for any existing OpenAI API-compatible service (vLLM, TGI, etc.) by changing only the base_url. This makes migration and A/B testing straightforward.