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GPUStack vs vLLM

The same facts for both, read from GitHub every night, and the relation a person reviewed.

GPUStackvLLM
LanguagePythonPython
LicenceApache-2.0Apache-2.0
Stars5.8k93k
Latestv2.2.3v0.31.0
Last push2026-09-302026-10-06
Release cadencetoo few releasesabout 14 days between releases
Active contributors27 commit authors on the default branch in the last 90 days260+ commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace ChatGPT. Alternatives to ChatGPT →

    PartialGPUStackManages a cluster of GPUs and serves open-weight models across it behind an OpenAI-compatible API.

    PartialvLLMServes open-weight models behind an OpenAI-compatible API, tuned for GPU throughput.