technology · 3 outlets · 3 linked reports
China's DeepSeek Unveils V4, Its Most Powerful Open AI Model Yet
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Summary
- DeepSeek previewed its V4 models in April 2026 — V4 Flash and V4 Pro — calling the Pro the biggest open-weight model available at 1.6 trillion parameters (49 billion active).
- Both are mixture-of-experts models with 1-million-token context windows and a new 'Hybrid Attention' technique for long conversations.
- DeepSeek claims its top V4 model outperforms open-source rivals and beats OpenAI's GPT-5.2 and Google's Gemini 3.0 Pro on some benchmarks — at a fraction of the price.
The question
Open-weight Chinese models like DeepSeek are closing the gap with US frontier AI.
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