An independent directory of U.S. AI organizations and U.S.-led open models, software, and research. Explore what they build, what is available, and where to find the original sources.
Independent project. Not a United States government website.
Editor’s selection (Sep 29, 2026): These entries were picked to show the range of what the catalog covers — a nonprofit research lab, a chip designer, a compute provider, a data platform, a robotics company, and an open-source foundation; and a model family, a framework, a runtime, a dataset, an evaluation tool, and a research stack. They are not ranked and are not the most important entries.
Directory
U.S. AI organizations, labs, research units, and foundations: what they build and how their products are delivered.
Directory
U.S.-led open models, software, datasets, and evaluation tools: what is public, under which license, and who maintains it.
Latest news
On September 18, 2026, Character.AI and The Walt Disney Company announced that members of Character.AI's technical team are expected to join Disney. Neither announcement describes an acquisition or a licensing agreement, and Character.AI said its app remains live. The move has only been announced, and the Character.AI record still lists the company as privately held with no parent organization.
Agility Robotics, Inc. and Churchill Capital Corp XI, a publicly traded blank check company, filed a registration statement on Form S-4 with the SEC on September 4, 2026, for the business combination they announced in June 2026. The merger is pending: it still needs approval by Churchill XI's shareholders, SEC review of the registration statement, regulatory and stock exchange approvals, and other closing conditions. If it closes, the combined company would trade under the ticker AGLT.
NVIDIA entered into a definitive agreement to acquire Hugging Face, Inc. on September 2, 2026, and announced it the next day. NVIDIA's Form 8-K says the transaction is expected to close in the first half of 2027, subject to closing conditions including regulatory approvals, so Hugging Face is still listed as a privately held company with no parent organization. NVIDIA says the Hugging Face platform will stay open to models from other developers and will not require NVIDIA hardware.
Compare
These are counts of published records in this catalog — not measures of capability, and not a census of American AI. Family overviews are counted separately from the releases they summarize, and research units are counted separately from their parents.
Open the comparison workspace| Record type | Count | What is counted |
|---|---|---|
| Organization recordsEvery published organization record, including research units and subsidiaries listed separately. | 99 | Every published organization record, including research units and subsidiaries listed separately. |
| Top-level organizationsOrganization records without a parent organization in this catalog. | 91 | Organization records without a parent organization in this catalog. |
| Units and subsidiariesOrganization records that belong to a parent listed in this catalog. Not independent companies. | 8 | Organization records that belong to a parent listed in this catalog. Not independent companies. |
| Model familiesOverview records. Not added to release counts. | 43 | Overview records. Not added to release counts. |
| Model releasesSpecific releases assessed. | 77 | Specific releases assessed. |
| FrameworksSoftware libraries for building or training models. | 26 | Software libraries for building or training models. |
| RuntimesSoftware for serving or running models. | 8 | Software for serving or running models. |
| Research stacksReference training or research codebases. | 5 | Reference training or research codebases. |
| DatasetsPublished datasets. | 8 | Published datasets. |
| Evaluation toolsBenchmarks and evaluation harnesses. | 11 | Benchmarks and evaluation harnesses. |
Organizations with the most open-artifact records here. This counts catalog records, not importance, quality, or total output.
Editorial log
Entries whose evidence an editor checked most recently. A review date is not a release date. See the changelog.
How this catalog works
Each statement links to the official page, model card, repository, or license that supports it, with the date it was checked. Unknown stays unknown.
Entries qualify through documented U.S. headquarters, a U.S. nonprofit or lab, documented U.S. control, or U.S.-based project governance — applied the same way to everyone.
Models, software, datasets, and evaluation tools each get their own checklist. Model tiers follow USASI rubric v0.1, an editorial rubric, not a certification.
Independent project. Not a United States government website. USASI is not affiliated with any listed organization, and a listing is not an endorsement, a safety assessment, or a ranking. Read the methodology or the disclaimer.
Local corner · September 2026
A small, rotating look at people whose public work helps others run AI models on their own hardware.
Help keep USASI useful.
Find the catalog useful? Leave an optional tip to support its upkeep. Tips never affect listings, coverage, or openness assessments.
Optional. No USASI account required. Payment takes place on the linked provider’s website (Buy Me a Coffee).
About supporting this project