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vLLM vs SGLang
A fact table for vLLM and SGLang (both in AI Developer Tools). Both are listed with the same pricing model: Free.
| vLLM | SGLang | |
|---|---|---|
| Category | AI Developer Tools | AI Developer Tools |
| What it does | Open-source high-throughput inference engine for large language models. | Open-source fast serving framework for large language and vision-language models. |
| Pricing model | Free Free to use | Free Free to use |
| Pricing source | Source: https://github.com/vllm-project/vllm | Not confirmed here; check the vendor's site. |
| Official site | https://vllm.ai/ | https://docs.sglang.io/ |
| Link checked | 2026-11-01 | 2026-11-05 |
About this page. It only shows facts we can point to: category, official site and the pricing model shown on the vendor's pricing page when we could confirm it. It does not score features or pick a winner, since the better fit depends on what you need. Plans change often, so verify on each vendor's site.