On April 24, DeepSeek announced via its official WeChat account that the preview version of the new model series DeepSeek-V4 is officially online and open-sourced. DeepSeek-V4 features a million-word ultra-long context and leads in agent capabilities, world knowledge, and reasoning performance in both domestic and open-source fields. The model is available in two versions based on size. Starting today, users can log in to the official website chat.deepseek.com or the official app to interact with the latest DeepSeek-V4 and explore the new experience of 1M ultra-long context memory. The API service has also been updated; by changing the model_name to deepseek-v4-pro or deepseek-v4-flash, users can access it.
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