Ollama vs vLLM

Ollama vs vLLM
Fact	Ollama	vLLM
Language	Go	Python
Licence	MIT	Apache-2.0
Stars	182k	93k
Latest	v0.35.1	v0.31.0
Last push	2026-10-06	2026-10-06
Release cadence	about 4 days between releases	about 14 days between releases
Active contributors	18 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

Both replace ChatGPT. Alternatives to ChatGPT →
PartialOllamaRuns open-weight models on your own machine behind a local API. Pair it with a chat app for the interface.
PartialvLLMServes open-weight models behind an OpenAI-compatible API, tuned for GPU throughput.
Both replace Claude. Alternatives to Claude →
PartialOllamaRuns open-weight models on your own machine behind a local API. Pair it with a chat app for the interface.
PartialvLLMServes open-weight models behind an OpenAI-compatible API.

v0.40.0-rc62026-09-25v0.40.0pre-release
v0.35.12026-09-29Ollama now supports Clef and Clef Flash, Cloudflare's new open-source decision models, through /v1/systemone.
v0.35.02026-09-28Ollama now supports decision models through /v1/systemone, based on TypeSafe’s Jev API.
v0.34.42026-09-23Structured outputs on thinking models now apply in a single pass, making them faster and more reliable.
v0.34.32026-09-19GET /api/show now advertises each model's thinking controls and default:

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.

✓ signed The latest release, v0.35.1, carries a signature GitHub verified.

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unsigned The latest release, v0.31.0, carries no signature GitHub could verify.

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