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DeepSeek's new model costs a fraction of a cent and just crashed two stock prices

12 September 2026
DeepSeek's new model costs a fraction of a cent and just crashed two stock prices
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DeepSeek's new model costs a fraction of a cent and just crashed two stock prices

552 billion parameters. Eight billion active on the input side, 16 billion on the output. Those are the numbers behind DeepSeek V4.1 Flash, which launched on 10 September and immediately compressed margins across the AI inference market.

Key Takeaways

  • DeepSeek V4.1 Flash uses 552 billion parameters but only activates 8 to 16 billion per query
  • MiniMax and Z.ai shares dropped more than 8% on launch day in Hong Kong
  • DeepSeek says it has reduced high-bandwidth memory requirements, rattling Samsung and SK Hynix shares
  • The company ordered Huawei AI chips for a new data centre, bypassing the Nvidia supply chain entirely

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