Not established from the available sources.
DEEPSEEK · MODEL RELEASE TRACKER
DeepSeek-V3.1-Terminus
DeepSeek-V3.1-Terminus is a named update of DeepSeek V3.1 released on 2025-09-22 that builds on V3.1, addressing user feedback and improving agent performance and language consistency. The release provides open-source model weights on Hugging Face.CURRENT SNAPSHOT2/5 DIMENSIONS WITH DATA
The dimensions that change the decision.
Not established from the available sources.
Not established from the available sources.
Benchmark performanceDelivers more stable and reliable outputs across benchmarks compared to the previous version (V3.1).
Open-source weights availableOpen-source model weights for DeepSeek-V3.1-Terminus are available on Hugging Face.
VERIFIABLE FACTS
Every value stays attached to a source and date.
RELEASE · Release dateDEVELOPER CLAIM
Announced/published on 2025-09-22 as DeepSeek-V3.1-Terminus.
CAPABILITIES · Improved language consistencyDEVELOPER CLAIM
Reports fewer CN/EN mix-ups and no more random characters, indicating improved language consistency.
CAPABILITIES · Agent performance upgradesDEVELOPER CLAIM
Upgrades to agents, including stronger Code Agent and stronger Search Agent performance.
BENCHMARKS · Benchmark performanceDEVELOPER CLAIM
Delivers more stable and reliable outputs across benchmarks compared to the previous version (V3.1).
AVAILABILITY · Open-source weights availableDEVELOPER CLAIM
Open-source model weights for DeepSeek-V3.1-Terminus are available on Hugging Face.
WHAT CHANGED