DeepSeek begins internal testing for V4.1 Flash intermediate version

DeepSeek has started internal testing of version 4.1 Flash intermediate version. The official WeChat group notification states that the new model has a new architecture, natively supports multimodal capabilities, is more powerful, faster, and cheaper. The current billing is the same as V4 Flash, with a maximum of 20 concurrent sessions per account.

Users can now directly call it, and there is no need to change the base_url, just replace the original model ID with deepseek-v4.1-flash-expires-on-0910.