DeepSeek-V3.1
Hybrid-reasoning DeepSeek model with thinking and non-thinking modes
ECI STANDING#111 of 266
SCORE139.92136.28–143.28 CI
FRONTIER LAGLaunched 8.1 months behindScores about what o1 did in December 2024.
SCORES LIKE THESE MODELS
Full Epoch Capabilities Index ranking ↗Kimi K2 (Jul 2025)Moonshot · Jul 2025140.11
gpt-oss-120bOpenAI · Aug 2025140.1Gemini 2.5 Flash (Apr 2025)Google DeepMind · Apr 2025139.97
Qwen3-30B-A3B-Thinking (Jul 2025)Alibaba · Jul 2025139.64
From the lab
Launch announcement · Aug 21, 2025DeepSeek-V3.1 ReleaseRELEASE DATEAug 21, 2025
WEIGHTSOpen weights
CONTEXT WINDOW131.1K
MAX OUTPUT8.2K
REASONINGYes
TOOL CALLINGYes
INPUTStext
OUTPUTStext
Specifications from Models.dev. Availability and limits may differ by provider. Benchmark scores come from Epoch AI under CC BY 4.0.