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01.AI is the Beijing lab founded by Kai-Fu Lee, behind the Yi family of bilingual open-weight language models. Yi releases compete at the open frontier on Chinese and English benchmarks.
Visit 01.AIModels tracked
1
Open weight
0
API only
1
Avg score
64.7
Top benchmark
68.4
Arena Score
Total HF downloads
—
Context window
16K
First release
Sep 2024
Latest release
Sep 2024
Ranked by composite score across benchmarks, popularity, efficiency, and versatility.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | Yi LightningAPI | text | BB64.7 | — | Sep 2024 |
The strongest model from this provider in each modality. Click a card to open the model page.
Text
Yi Lightning
How this provider’s catalog splits across text, image, video, audio, embedding, and decision models.
When each model shipped, newest first.
Sep 30
Composite grades across this provider’s catalog. Higher is better, blending benchmarks, popularity, and efficiency.
Closed-source models accessed through 01.AI’s API.
API pricing is per million tokens unless noted otherwise.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | Yi LightningAPI | text | BB64.7 | — | Sep 2024 |
Each family is a model series. Browse all releases in a family with their own leaderboard.
01.AI ships 1 model that we track. Of those, 0 are open weight and 1 are accessed through their API.
It depends on the model. See the open-weight section above for models you can run locally, and the API-only section for closed models priced per token.
By composite score, Yi Lightning is currently the top 01.AI model in our directory. Composite score blends benchmarks, popularity, efficiency, and versatility.
Full Directory
Open the full directory to filter by hardware, capability, license, and benchmark score.
Open Directory
See every release in a family side by side, with a timeline and a leaderboard. Useful when you have already picked a series and want the right size.
