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Three reasons why DeepSeek’s new model matters

MIT Tech Review Caiwei Chen April 24, 2026
Three reasons why DeepSeek’s new model matters
AI Summary— plain English for professionals

# DeepSeek's New AI Model: What It Means for You Chinese AI company DeepSeek just released a powerful new model that can understand and work with much longer documents and conversations than before—think of it like upgrading from reading one page at a time to reading an entire book. The company is giving this technology away for free (it's "open source"), which means developers around the world can use it and build new tools on top of it, potentially speeding up innovation in AI applications. This matters because competition from affordable, freely available AI models could shake up the market and give smaller companies a chance to build sophisticated AI features without paying expensive licensing fees.

On Friday, Chinese AI firm DeepSeek released a preview of V4, its long-awaited new flagship model. Notably, the model can process much longer prompts than its last generation, thanks to a new design that helps it handle large amounts of text more efficiently. Like DeepSeek’s previous models, V4 is o

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