Ollama vs vLLM

Ollama and vLLM both appear on the Smoower Developer Ecosystem Index.

vLLM (rank #47) holds a narrow lead over Ollama (rank #122) on the overall Smoower ecosystem score (61 vs 54). The gap of 7 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), vLLM is ahead of Ollama. On education (docs, guides and learning material for developers), Ollama is slightly ahead of vLLM. On community (issue response, PR reviews and discussion health), vLLM is clearly ahead of Ollama. On reach (how visible the ecosystem is beyond its own repos), Ollama is clearly ahead of vLLM. On momentum (release cadence and how fast the ecosystem moves), Ollama is ahead of vLLM.

Ollama carries 190,304 GitHub stars across 4 public repos, with 3 repositories active in the last 90 days and 241 external contributors on record. vLLM shows 115,730 stars across 43 public repos, 35 active in the last 90 days and 881 external contributors.

Ollama is the stronger read for anyone weighting reach. vLLM looks better where community is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.