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title: README
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GitHub | Discord | Paper | 💪 Tech Blog
Welcome to the world of the Yi series models from [01.AI](https://www.01.ai/)! You can explore the Yi series models listed below. Try now and enjoy! 😘 Series | Intro | ---|---| Yi-Coder Models (2024/09)|Yi-Coder is a series of open-source code language models that delivers state-of-the-art coding performance with fewer than 10 billion parameters. Yi-1.5 Models (2024/05)|An **upgraded** version of the Yi models (2023/11), with stronger performance in coding, math, reasoning, and instruction-following.