OpenAI

Frontier lab United States Privately held, venture-funded

San Francisco lab behind the GPT series. Weights are closed and served by API; the gpt-oss releases are its open-weight exception, so most OpenAI entries here are catalogued from third-party evaluation rather than downloaded.

Who they are

OpenAI is a frontier lab based in the United States, documented at openai.com. Weights are closed and served by API; the gpt-oss releases are its open-weight exception, so most OpenAI entries here are catalogued from third-party evaluation rather than downloaded.

How they are funded

Privately held, venture-funded. Capped-profit company controlled by a non-profit foundation. Microsoft holds the largest corporate stake and supplies much of its compute.

Microsoft	United States
SoftBank	Japan
Thrive Capital	United States
Khosla Ventures	United States
MGX	United Arab Emirates

Capital crosses borders. OpenAI operates from the United States, but principal funding also comes from Japan, United Arab Emirates. For sovereignty or export-control assessments, the funder jurisdiction can matter as much as the operating one.

Unverified. Ownership and funding are compiled from public reporting as of 2026-05. Unlike the hashes and signatures in this registry, Sovereign Frontier cannot attest any of it, and private-company funding changes faster than this page does. Treat it as a starting point for your own due diligence, not as evidence.

What they publish here

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