DeepSeek-V4.1-Pro release date

Window

Nov 8, 2026 – Jun 18, 2027

Why this date

DeepSeek V-series has shipped every 144 days on average, and it’s been 88 days.

• Activity without a date3

  Builds, arena entries or version strings are visible but nobody has named a date. Baseline pulled 3% earlier; the window stays wide.

• Window tightness0

  80% window spans 222 days (σ ≈ 131.0d).

• Corroboration25

  1 distinct source, worth 0.7 weighted. Aggregator reposts count for little.

• Source authority0

  No live dated claims; the date comes from shipping cadence.

The signal score is our own weighting of the evidence above. It is not a calibrated probability, and nothing here has been scored against real outcomes yet. Treat “Thin” as the honest summary and the number as its arithmetic.