Organization
Unsloth
Developer platform · San Francisco, California (owner address in the company's USPTO trademark registration)
Unsloth develops open-source software for fine-tuning, reinforcement learning, and running language, image, audio, and embedding models on local hardware, offered as a Python library (Unsloth Core), a web interface (Unsloth Studio), and a desktop app (Unsloth Desktop).312
Using this organization’s offerings
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
- Legal name
- Unsloth AI Inc.8
- Ownership (separate from openness)
- Privately held
Recorded classification; fact-level ownership verification pending.
- Legal form
- Delaware corporation8
- Headquarters
- San Francisco, California (owner address in the company's USPTO trademark registration)81011
- Founded
- Unknown
- Sectors
- Open models
What is and isn’t public
Products
No hosted model products are recorded for this organization.
Other products
| Product | Kind | Documented delivery and access | Reviewed |
|---|---|---|---|
| Unsloth Desktop (external site: unsloth.ai) | Developer tool | Free, open-source desktop app for macOS, Windows, and Linux for running and training models locally, with an OpenAI-compatible local API; downloads are published on GitHub.13 | Sep 29, 2026 |
Cataloged artifacts
Frameworks
- Unsloth (open-source library)SoftwareAvailability: Public
Open positions
Automated job coverage is not configured for this organization.
What this catalog does not know
- Founding date: not documented in the sources reviewed.
- Official careers page: not verified by this catalog.
Have a primary source? How to report a correction.
U.S. eligibility
Eligible · basis: U.S. headquarters
The deciding evidence is an official registry. The USPTO record for the UNSLOTH trademark (Registration No. 7973599, registered October 7, 2025, for downloadable software for training and fine-tuning large language models) names Unsloth AI Inc., a Delaware corporation, as owner with an address in San Francisco, California. The application first gave a Delaware address; the USPTO's May 2025 office action rejected it as a domicile and required the company's headquarters address, defined as the place where its senior executives direct and control its activities. The company's June 2025 response replaced it with the San Francisco address, the only owner address in that response, and the USPTO's June 2025 action states that an acceptable domicile address was submitted. This is read as a documented U.S. principal place of business. The company's website, re-checked on 2026-10-01, gives no address, and its terms and privacy URLs return not-found errors. The company is named in the copyright notices of the Unsloth repository's license and source files. Y Combinator's directory (San Francisco) and the unslothai GitHub profile (United States) agree but are self-reported and were not relied on.89101112134567
Sources
This listing is not an endorsement or a federal approval.