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DeepSeek ran V4.1 Flash for 48 hours, then closed the endpoint

10 September 2026
DeepSeek ran V4.1 Flash for 48 hours, then closed the endpoint
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DeepSeek ran V4.1 Flash for 48 hours, then closed the endpoint

Two days. That was the entire life of the DeepSeek V4.1 Flash beta, which opened to a limited group of testers on 9 September with an endpoint scheduled to go offline on 10 September. No model card was published, and no price.

Key Takeaways

  • The DeepSeek V4.1 Flash beta opened on 9 September with the endpoint scheduled to close on 10 September, a 48 hour window
  • Multimodal input is native to the base model this time, rather than a vision encoder bolted onto a text model as in V4 Flash
  • No model card has been published, so audio support is unconfirmed and testers only exercised text and images

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