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DeepSeek-V3.1-Terminus

DeepSeek · DeepSeek line · flagship · open weights

Released September 22, 2025Replaced by DeepSeek-V3.2-Exp

DeepSeek-V3.1-Terminus was released by DeepSeek on September 22, 2025, as an open-weights flagship model in the DeepSeek line.

  • Release 10 of 14 in the DeepSeek line.
  • Came 34 days after DeepSeek-V3.1, released Aug 19, 2025.
  • Replaced by DeepSeek-V3.2-Exp on September 29, 2025, 7 days later.
  • These days the line ships a new model about every 63 days.

No detailed card for this model: we only add numbers published by the maker or by independent benchmarks. Sources: DeepSeek

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Where the DeepSeek line stands

DeepSeek-V4-Pro-0813 is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.

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DeepSeek-V4-Pro-0813

DeepSeek · DeepSeek line · flagship · open weights
Mid-cycle52 of ~63 days into its usual cycle
AnnouncedDeepSeek-V4.1-Pro

“all deepseek-v4-pro requests will route to V4.1-Flash at V4.1-Flash rates. This will continue until V4.1-Pro launches.” — DeepSeek, Sep 10, 2026 · DeepSeek API docs

The general-availability release of V4-Pro scores 87.9% on Terminal Bench 2.1, up from 72.1% for the April preview in DeepSeek's tests, and keeps the MIT license.

Released Aug 13, 2026 · what changed →
Days since last release
DeepSeek-V4-Pro-0813 · Aug 13, 2026
52
days
Usual gap
63
days
Recent gaps
DeepSeek-V4-Pro-0813 · Aug 2026
111
DeepSeek-V4 · Apr 2026
144
DeepSeek-V3.2 · Dec 2025
63
DeepSeek-V3.2-Exp · Sep 2025
7

Every DeepSeek release

Newest first. See the full line with every card →

  1. Aug 13, 2026DeepSeek-V4-Pro-0813
  2. Apr 24, 2026DeepSeek-V4
  3. Dec 1, 2025DeepSeek-V3.2
  4. Sep 29, 2025DeepSeek-V3.2-Exp
  5. Sep 22, 2025DeepSeek-V3.1-Terminus · this page
  6. Aug 19, 2025DeepSeek-V3.1
  7. May 28, 2025DeepSeek-R1-0528
  8. Mar 24, 2025DeepSeek-V3-0324
  9. Jan 20, 2025DeepSeek-R1
  10. Dec 26, 2024DeepSeek-V3
  11. Dec 10, 2024DeepSeek-V2.5-1210
  12. Nov 20, 2024DeepSeek-R1-Lite-Preview
  13. Sep 5, 2024DeepSeek-V2.5
  14. May 6, 2024DeepSeek-V2