compare
SGLang vs vLLM
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | SGLang | vLLM |
|---|---|---|
| Language | Python | Python |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 37k | 93k |
| Latest | v0.5.21 | v0.31.0 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | about 14 days between releases | about 14 days between releases |
| Active contributors | 161+ commit authors on the default branch in the last 90 days | 260+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
SGLang replaces vLLM. Alternatives to vLLM →
Full replacementGPU serving engine for open-weight models behind an OpenAI-compatible API.
Both replace ChatGPT. Alternatives to ChatGPT →
PartialSGLangServes open-weight models behind an OpenAI-compatible API, tuned for GPU throughput.
PartialvLLMServes open-weight models behind an OpenAI-compatible API, tuned for GPU throughput.
Both replace Claude. Alternatives to Claude →
PartialSGLangServes open-weight models behind an OpenAI-compatible API.
PartialvLLMServes open-weight models behind an OpenAI-compatible API.
SGLang
vLLM
- v0.31.02026-10-05This release features 717 commits from 307 contributors (96 new)!
- v0.30.02026-09-22This release features 762 commits from 315 contributors (104 new)!
- v0.29.02026-09-09This release features 594 commits from 277 contributors (91 new)!
- v0.28.02026-08-26This release features 584 commits from 270 contributors (76 new)!
- v0.27.12026-08-11This is a patch release on top of v0.27.0.
SGLang
unsigned The latest release, v0.5.21, carries no signature GitHub could verify.
Loading the security report
vLLM
unsigned The latest release, v0.31.0, carries no signature GitHub could verify.
Loading the security report