01.AI (Yi)
A model maker, not a marketer-facing product. List it only if the directory wants coverage of open-weight providers.
Who this helps
Developers choosing open-weight models
Researchers comparing model families
Technical teams tracking the AI market
Readers wanting background on the Yi line
What it does
01.AI was founded by Kai-Fu Lee in 2023 and released the Yi family of language models, some of them open weight. Newer flagship versions are offered through an API.
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