SIRumors
ReleasedSep 10, 2026 ·

DeepSeek V4.1 is out

DeepSeek shipped DeepSeek V4.1.

DeepSeek

DeepSeek released DeepSeek V4.1 on Sep 10, 2026. The company announced it itself (DeepSeek on X).

It follows DeepSeek V4, 139 days earlier. Releases in the DeepSeek line usually land about 144 days apart.

Based on that pace, the next DeepSeek release is expected around Feb 1, 2027. That is our estimate, not a leak.

“🚀 Introducing DeepSeek-V4.1-Flash: smarter, faster, more efficient.”
DeepSeek on X
Released
Sep 10, 2026
Line
DeepSeek
Previous
DeepSeek V4 (Apr 24, 2026)
Confirmed by
The company's own announcement
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