head to head · open source
vllm vs OpenLIT
vllm has 92,028 GitHub stars, 22,335 forks, 7,953 open issues and last shipped yesterday. OpenLIT has 2,770 stars, 388 forks, 60 open issues and last shipped yesterday. vllm leads on adoption by 3,222% (92,028 vs 2,770 stars). vllm is written in Python under Apache-2.0; OpenLIT is written in TypeScript under Apache-2.0. vllm has attracted 24% as many forks as stars, OpenLIT 14%. vllm was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | OpenLIT | |
|---|---|---|
| GitHub stars | ★ 92K | ★ 2.8K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 22K | ⑂ 388 |
| 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 OpenLIT if
- You want the OpenLIT feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and OpenLIT 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 OpenLIT
OpenLIT is an open source, OpenTelemetry native observability and evaluation platform for AI applications, AI agents and coding agents, built for engineers who run LLM backed systems and need to see what those systems actually did.
read the full OpenLIT overview →
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Frequently asked questions
Is vllm or OpenLIT more popular?
vllm has 92,028 GitHub stars and OpenLIT has 2,770. vllm has the larger community by that measure.
Are vllm and OpenLIT free?
Both are open source. vllm is licensed under Apache-2.0 and OpenLIT under Apache-2.0. Neither carries a licence fee.
What is the difference between vllm and OpenLIT ?
vllm is written in Python and OpenLIT in TypeScript. 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 OpenLIT ?
Choose vllm if you want the larger community (92,028 stars) or its Apache-2.0 licence terms. Choose OpenLIT if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.