Qwen3.8-Flash officially launches on B.AI, API official group fully open for free

On August 27, B.AI announced that the latest open-source Qwen3.8-Flash model from Alibaba Tongyi Qianwen has officially landed on the platform, with the API official group fully open for free calls. This multimodal MoE model serves as a forward-looking preview of the Qwen4 architecture, featuring a total of 125B parameters and 51B N-gram Embedding, activating 6B parameters per token.

The model integrates the GDN and QSA mixed attention mechanisms for the first time, natively supporting 262K context and can be extended to 1M via YaRN. Developers can start calling it at zero cost for tasks such as programming assistance, agent workflows, and document analysis.