head to head · open source
vllm vs pegainfer
vllm has 92,028 GitHub stars, 22,335 forks, 7,953 open issues and last shipped yesterday. pegainfer has 704 stars, 107 forks, 89 open issues and last shipped yesterday. vllm leads on adoption by 12,972% (92,028 vs 704 stars). vllm is written in Python under Apache-2.0; pegainfer is written in Rust under Apache-2.0. vllm has attracted 24% as many forks as stars, pegainfer 15%. pegainfer was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 6 topic tags (cuda, deepseek, inference, kimi), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| vllm | pegainfer | |
|---|---|---|
| GitHub stars | ★ 92K | ★ 704 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Rust |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 22K | ⑂ 107 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick vllm if
- You weight community size — 92K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick pegainfer if
- You want the pegainfer feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and pegainfer fits your workflow better
About vllm
vLLM is a high throughput, memory efficient Python library for LLM inference and serving, built for ML engineers and platform teams who need to run open weight models on their own hardware at production scale.
About pegainfer
PegaInfer is a pure Rust and CUDA large language model inference engine that serves models ranging from Qwen3 to Kimi K2 behind an OpenAI compatible API, with no PyTorch or Python runtime in the default serving path.
read the full pegainfer overview →
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Frequently asked questions
Is vllm or pegainfer more popular?
vllm has 92,028 GitHub stars and pegainfer has 704. vllm has the larger community by that measure.
Are vllm and pegainfer free?
Both are open source. vllm is licensed under Apache-2.0 and pegainfer under Apache-2.0. Neither carries a licence fee.
What is the difference between vllm and pegainfer?
vllm is written in Python and pegainfer in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, vllm or pegainfer?
Choose vllm if you want the larger community (92,028 stars) or its Apache-2.0 licence terms. Choose pegainfer if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.