AI Research Atlas

DeepSeek-V3.1-Terminus

DeepSeek · 22 September 2025

V3.1 stability update with fewer Chinese/English mix-ups and stray characters and better code and search agents (BrowseComp 30.0 to 38.5).

Post-training fix for language consistency and agent behavior; BrowseComp 30.0 to 38.5 and Terminal-Bench 31.3 to 36.7. It also served as the exact baseline for the V3.2-Exp sparse-attention comparison.

Date
Monday, 22 September 2025
Lab
DeepSeek
Kind
open-weights
Access
open weights

Figures

MeasureValueMeasured by
BrowseComp38.5 (from 30.0)
Terminal-Bench 31.3 to 36.7
company

Sources

  1. api-docs.deepseek.com/news/news250922
  2. huggingface.co/deepseek-ai/DeepSeek-V3.1-Terminus

This record was checked against its sources on 6 October 2026. How we check

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