These models will be available via Alibaba Cloud's Model Scope and Hugging Face, a huge repository of AI models. They will be accessible to academics, researchers and commercial institutions globally.
Alibaba's Hong Kong-listed shares closed nearly 5% higher.
Open-source AI tech has been thrown into the spotlight since Chinese firm DeepSeek rattled global markets in January, after claiming its artificial intelligence model was trained at a fraction of the cost of leading AI players and on less-advanced Nvidia chips.