Organization

EleutherAI

EleutherAI is a research lab and nonprofit research organization headquartered in Washington, D.C.4. This catalog lists 1 open model release, 1 software project, 1 dataset, and 1 evaluation tool from EleutherAI, under licenses including the Apache License 2.0 and the MIT License.

Documented roles: Research lab · Nonprofit research · Model developer · Open-source steward

EleutherAI is a non-profit AI research lab that trains and releases open models, datasets, and tools, and studies how models learn, how to evaluate them, and how to make open-weight systems safer. It began in July 2020 as a Discord community and incorporated as a non-profit research institute in early 2023.1

Last reviewedSep 29, 2026Entry updated Sep 29, 2026

Using this organization’s offerings

Ownership, delivery, and openness answer different questions. Publicly traded does not mean open source; privately held does not mean closed.

The detailed audience, self-hosting, pricing, and restrictions review has not yet been completed. Consult the sourced product records below and the publisher’s current terms. Missing detail means unknown, not unavailable.

Key facts

Website: eleuther.ai (external site: eleuther.ai)
Legal name: EleutherAI Institute (listed in the IRS exempt-organization extract as "ELEUTHERAI INSTITUTE")4 3
Ownership (separate from openness): Nonprofit
Recorded classification; fact-level ownership verification pending.
Legal form: Corporation recognized by the IRS as tax-exempt under Section 501(c)(3), with a ruling date of November 2023; the IRS extract classifies it as a publicly supported organization under section 170(b)(1)(A)(vi).4 5
Headquarters: Washington, D.C.4
Founded: 20201
Sectors: Open models, Research, Data

What is and isn’t public

An evidence-based summary of what this catalog has documented. It is not a verdict on the organization as a whole.

EleutherAI lists openly licensed training corpora (the Common Pile), the GPT-NeoX training framework, and model suites such as Pythia, released with checkpoints and data order, among its work. This catalog assesses openness per artifact; it currently records the LM Evaluation Harness.1

Products

Documented products and how they are delivered. Each row links to the official page.

No product records yet.

Cataloged artifacts

Records in the Open Models & Tools directory that list this organization as a maintainer or publisher.

Model families (1)

PythiaModel family

Model releases (1)

Pythia 12BModel releaseAvailability: PublicModel-disclosure tier (USASI rubric v0.2): Open-weight

Research stacks (1)

GPT-NeoXSoftwareAvailability: Public

Datasets (1)

The PileDatasetAvailability: Partial

Evaluation tools (1)

LM Evaluation HarnessEvaluation toolAvailability: Public

Notable documented facts

EleutherAI says it works mainly through a public Discord server that does not sharply separate employees, volunteers, and collaborators from other institutions.1
EleutherAI announced in March 2023 that it was forming a non-profit research institute funded by charitable donations and grants.3

What this catalog does not know

Unknown means the sources reviewed for this record do not document it. It is not evidence that something does not exist.

Official careers page: not verified by this catalog.
Products: none documented in this record.

Have a primary source? How to report a correction.

U.S. eligibility

How this record meets the catalog’s published eligibility policy.

Eligible · basis: U.S. nonprofit or lab

EleutherAI states that it incorporated as a non-profit research institute in early 2023. The IRS exempt-organization extract for the District of Columbia lists EleutherAI Institute in Washington, D.C., as a 501(c)(3) organization with a November 2023 ruling date. EleutherAI's own pages do not state a location, so the Washington, D.C. location comes from IRS data. The executive director named in the organization's Form 990 data (as compiled by ProPublica) matches the executive director on EleutherAI's staff page, which links the IRS entity to EleutherAI.1 4 6 2

Assessed Sep 29, 2026

Eligibility policy

Sources

1.
About EleutherAI | EleutherAI (external site: eleuther.ai)
EleutherAI · Official page · accessed Sep 29, 2026
2.
Staff | EleutherAI (external site: eleuther.ai)
EleutherAI · Official page · accessed Sep 29, 2026
3.
The View from 30,000 Feet: Preface to the Second EleutherAI Retrospective (external site: blog.eleuther.ai)
EleutherAI · Announcement · published Mar 2, 2023 · accessed Sep 29, 2026
4.
Exempt Organizations Business Master File Extract - District of Columbia (eo_dc.csv) (external site: irs.gov)
Internal Revenue Service · Filing · accessed Sep 29, 2026
5.
Exempt Organization Business Master File Extract information sheet (external site: irs.gov)
Internal Revenue Service · Documentation · accessed Sep 29, 2026
6.
Eleutherai Institute - Nonprofit Explorer (external site: projects.propublica.org)
ProPublica · Other · accessed Sep 29, 2026

Email a correction Report a correction Edit this entry

This listing is not an endorsement or a federal approval.

Cite this page

APA style

USASI. (2026, September 29). EleutherAI. United States of America Superintelligence. https://unitedstatesofamericasuperintelligence.com/companies/eleutherai/

BibTeX

@misc{usasi_eleutherai,
  author = {{USASI}},
  title = {EleutherAI},
  year = {2026},
  month = sep,
  howpublished = {\url{https://unitedstatesofamericasuperintelligence.com/companies/eleutherai/}},
  note = {United States of America Superintelligence. Last updated 2026-09-29}
}

The date is when this page was last updated. Add the date you read it if your style needs one.

For maintainers: a “Listed in USASI” badge

Links to this page. It says the entry is listed, not endorsed or rated. About the badge

Markdown (for a README)

[![Listed in the USASI catalog](https://unitedstatesofamericasuperintelligence.com/badges/listed.svg)](https://unitedstatesofamericasuperintelligence.com/companies/eleutherai/)

HTML

<a href="https://unitedstatesofamericasuperintelligence.com/companies/eleutherai/"><img src="https://unitedstatesofamericasuperintelligence.com/badges/listed.svg" alt="Listed in the USASI catalog" height="20"></a>