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Builders & open source

Simon Mo

Co-founder, Inferact

  • Co-founder, Inferact34
  • Lead maintainer and project lead (API entrypoints, community), vLLM project123

Simon Mo is a lead maintainer of vLLM, the open-source engine for serving large language models; the project's governance document lists Simon Mo among the lead maintainers responsible for its overall direction, and the committers list names Simon Mo as a project lead for API entrypoints and community. Simon Mo is also listed for the project's documentation, benchmarks, and CI, build, and release process. Simon Mo is a co-founder of Inferact, a company founded by vLLM's maintainers to work on AI inference.1234

At a glance

Current roles
Co-founder +1 more
Sector
Company
Work listed
1
Sources cited
8
Profile reviewed

Open-source work

Mo's earliest commits to vLLM date from November 2023 and include documentation for the official Docker image. vLLM's governance document now lists Mo among the lead maintainers responsible for the project's overall direction.561

The committers list names Mo as project lead for API entrypoints and community and as a reviewer for the model interface and the OpenAI-compatible API server, alongside documentation, benchmarks and the CI, build and release process. Mo published vLLM releases including v0.10.2 in September 2025 and v0.11.0 in October 2025.278

Inferact

In January 2026 Inferact announced itself as a company founded by creators and core maintainers of vLLM, aiming to make AI inference cheaper and faster while keeping vLLM open source. Mo's GitHub profile lists Mo as a co-founder of Inferact and lead maintainer of the vLLM project.43

Work and contributions

  • vLLM Open-source code

    Listed as a lead maintainer and project lead; the committers document lists Simon Mo for API entrypoints, community, documentation, benchmarks, and the CI, build, and release process.12

Timeline

  1. Made early commits to the vLLM repository, including an engine step fix.6
  2. Added documentation for vLLM's official Docker image.5
  3. Published the vLLM v0.10.2 release.7
  4. Published the vLLM v0.11.0 release.8
  5. Inferact, co-founded by Mo and other vLLM maintainers, was announced.43

Where they work

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References

8 sources · profile reviewed Oct 21, 2026 · data updated Oct 21, 2026

  1. vLLM governance process (project leads and lead maintainers)vLLM project · Documentation · accessed Oct 21, 2026
  2. vLLM committers and areas of expertisevLLM project · Documentation · accessed Oct 21, 2026
  3. simon-mo (Simon Mo) on GitHubGitHub · Official page · accessed Oct 21, 2026
  4. Introducing Inferact: Building the Future of AI InferenceInferact · Announcement · published Jan 2026 · accessed Oct 21, 2026
  5. vLLM commit: Documentation about official docker image (#1709)GitHub · Repository · published Nov 19, 2023 · accessed Oct 21, 2026
  6. vLLM commit: [Minor] Fix duplication of ignored seq group in engine step (#1666)GitHub · Repository · published Nov 16, 2023 · accessed Oct 21, 2026
  7. vLLM v0.10.2 releaseGitHub · Release notes · published Sep 13, 2025 · accessed Oct 21, 2026
  8. vLLM v0.11.0 releaseGitHub · Release notes · published Oct 2, 2025 · accessed Oct 21, 2026