Qwen

Qwen is Alibaba's model family and the assistant built on it. Its influence comes less from the chat product than from the open-weight releases: Qwen checkpoints became one of the most common starting points for fine-tuning, so a large amount of downstream tooling assumes them. That ecosystem feeds back into the hosted product, which now bundles task agents, research modes and image and video generation. It runs as two separate services — an international site and a mainland one — with the mainland product now branded Qianwen.