ModelTreeAI Model Lineage
Back to the directory
Model creator

01.AI

The company behind the Yi series of open-source language models, which it states are trained from scratch and distributes, for the Yi-1.5 series, under the Apache 2.0 licence.

2 familiesChecked Aug 29, 2026
Featured ecosystems

Recorded lineage, creator by creator

Nesting shows a recorded predecessor Model Passport
Creator01.AIThe company behind the Yi series of open-source language models, which it states are trained from scratch and distributes, for the Yi-1.5 series, under the Apache 2.0 licence.
Family

Yi-1.5

First released May 13, 2024

No recorded lineage links in this family, so no releases are connected here.

No creator statement of what this variant name means is recorded for Yi-1.5.

Family

Yi

First released Nov 2, 2023

No recorded lineage links in this family, so no releases are connected here.

No creator statement of what this variant name means is recorded for Yi.

Families without a featured release are not drawn here. Every record in the catalog, featured or not, is listed in the model index and the Model Tree.

Official record

The organization's own surfaces, and the verification date these facts were last checked against them.

Website
https://01.ai/
Release page
https://huggingface.co/01-ai
Type
company
Verified
Aug 29, 2026

Releases

Every release recorded for 01.AI, current and legacy alike. Filter by lifecycle status; the choice is kept in the page address so it survives a reload or a shared link.

Showing all 2 releases.

Primary sources

The organization-level sources behind the summary above.