vllm vs sglang
Updated
Short answer
Both are free, open-source LLM serving engines. vllm is more popular (95k vs 38k GitHub stars). Pick vllm if you want the bigger community (95k vs 38k GitHub stars).
Side by side
 vllm |  sglang | |
|---|---|---|
| Category | Inference & serving | Inference & serving |
| GitHub stars | 95,484 | 38,157 |
| Stars this week | +1,217 | +669 |
| Last update | today | today |
| License | Apache-2.0 | Apache-2.0 |
| Commercial use | ||
| Language | Python | Python |
| Runs on Mac | ||
| Runs without a GPU | ||
| GPU memory | Not stated | Not stated |
| Needs a paid API key | No | No |
| Self-hostable | ||
| Trending this week | – | – |
Hardware details are as stated by each project and may be incomplete.
Choose vllm if…
High-throughput inference engine for LLMs.
- you want the bigger community (95k vs 38k GitHub stars)
- you want the one with more momentum right now (+1.2k stars this week)
Choose sglang if…
Serves large language and multimodal models for inference and RL.
- its features fit your workflow better; check its README
FAQ
Is vllm better than sglang?
Both are free, open-source LLM serving engines. vllm is more popular (95k vs 38k GitHub stars). Pick vllm if you want the bigger community (95k vs 38k GitHub stars).
Which is better for commercial use, vllm or sglang?
Both use permissive licenses (Apache-2.0 and Apache-2.0), so both allow commercial use.
Do vllm and sglang run on a Mac?
Neither project states Mac support. Check their install guides before you start.
Are vllm and sglang free?
Yes. Both are open source and free to use.