DeepSeek V4 Just Changed the Open-Source AI Game — And It Wasn't Built on Nvidia
China's DeepSeek dropped V4 this week — a frontier-level open-weight model trained entirely on Chinese chips, priced at a fraction of GPT-5.5 and Claude. We break down what makes it a big deal, preview tomorrow's Meta and Microsoft earnings (the most important AI financial test of the quarter), and share a new benchmark showing top AI models still can't produce client-ready work in finance.
The skinny
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