Who Sponsors and Partners with LMSYS Org?

LMSYS Org's sponsors and partners are listed on its homepage as Voltage Park, NVIDIA, Nebius, Google Cloud, AtlasCloud, a16z, AMD, InnoMatrix, Laude Institute, Hyperbolic, NovitaAI, Verda Cloud, Sky9, Kaggle, MBZUAI, Together, RunPod, Anyscale, and HuggingFace. The page describes them as "leading companies and institutions advancing AI research," and includes a "Sponsor Us" link for organizations that want to join. If you are evaluating LMSYS as a research collaborator, a dependency for your own serving stack, or a sponsorship target, this list is the starting point — but the site does not publish what each sponsor provides, so treat the roster as a signal of backing rather than a breakdown of contributions.

The full sponsor and partner list

The mix matters: it spans compute providers, chip vendors, investors, a cloud platform, an academic institution, and the largest open-model community. That spread is consistent with LMSYS's stated mission of building models and systems that are "open, accessible, and scalable" — open research projects like SGLang, FastChat, and Chatbot Arena need donated or discounted compute, hardware access, and distribution to the community.

What the sponsorship actually supports

LMSYS Org's homepage presents the organization through three numbers: 15+ projects, 87K+ GitHub Stars, and 1000+ contributors. Its named projects include:

• SGLang (36.8k stars) — a high-performance serving engine for large language and multimodal models.
• FastChat (39.6k stars) — an open platform for training, fine-tuning, serving, and evaluating LLM-based chatbots.
• Chatbot Arena — a benchmark platform for LLMs using anonymous, randomized, crowdsourced battles (listed as "Graduated").
• Vicuna — an open-source chatbot.
• RouteLLM (5.6k stars) — a framework for serving and evaluating LLM routers.

Compute-heavy work like serving engines and crowdsourced arena battles depends on infrastructure, which is where cloud and chip sponsors are most directly relevant. Community and distribution partners like HuggingFace and Kaggle matter for reach and evaluation. The site itself does not itemize which sponsor funds which project, so any project-to-sponsor mapping beyond this is inference.

How to become a sponsor

The homepage includes a Sponsor Us link in the "Our Sponsors & Partners" section. That is the documented entry point. The site does not publish sponsorship tiers, pricing, eligibility criteria, or a contact form description, so the practical next step is to follow that link and read whatever terms LMSYS provides there rather than assuming a structure.

What this list does and does not tell you

Useful for:

• Judging whether LMSYS has credible infrastructure backing for its serving and benchmarking work.
• Identifying potential co-sponsors or ecosystem peers if you are considering support.
• Understanding which parts of the AI stack (chips, cloud, investment, community) consider LMSYS worth backing.

Not answered by the page:

• The size, duration, or form of any individual sponsorship (cash, compute credits, hardware, in-kind).
• Whether "partner" and "sponsor" are distinct categories — the page groups them under one heading.
• Any current pricing, contract terms, or sponsor benefits.

If your decision depends on those specifics, the "Sponsor Us" link is the only documented route to them; the public homepage gives you the roster and the mission framing, not the terms.