# LiteLLM vs vLLM

Both sit in the model provider layer with similar commercial terms, so the practical split is language: LiteLLM targets Python and vLLM targets Python.

| | LiteLLM | vLLM |
| --- | --- | --- |
| Licence | Open source | Open source |
| Pricing | open source | open source |
| Self-hostable | Yes | Yes |
| Languages | Python, TypeScript | Python |
| Install | pip install 'litellm[proxy]' | pip install vllm |
| Keys required | None | None |

## Full pages

- https://newagent.build/c/litellm
- https://newagent.build/c/vllm

## Machine interfaces

- `GET https://newagent.build/api/registry` — every component as JSON
- `GET https://newagent.build/api/vendors` — vendors, with the repo and releases feed to watch
- `GET https://newagent.build/api/advise?q=<plain english>` — recommended stack for a description
- `GET https://newagent.build/api/stack?<layer>=<id>&format=sh|json|md|yml|agents|env` — a stack as files
- `GET https://newagent.build/llms.txt` — the whole registry in one fetch

Any page here also returns markdown if you send `Accept: text/markdown`.