Alibaba (China)
DeepSeek-V3.1-Terminus comes just two months after the Chinese start-up launched V3.1, its most advanced model to date.
Model details
DeepSeek V3.1 Terminus is positioned as an updated, agent-oriented language model in the DeepSeek family, arriving shortly after the company's earlier V3.1 release. It is designed as a text-only system that emphasizes step-by-step reasoning, function calling, streaming responses, structured output, and adjustable temperature control. The model's design intent reflects DeepSeek's broader shift toward assistant behavior that can plan, invoke tools, and return well-formed data alongside natural language answers, making it a fit for developer-facing applications that blend conversation with programmatic actions. As a hosted variant served from China-region infrastructure, it inherits the practical profile of a production language model rather than a research artifact. At its core, the model continues the lineage established by V3.1, refining agent-friendly capabilities for tool calling and structured interaction rather than introducing a wholly new architecture. According to reporting on the launch, this iteration is framed as a steady advancement on the path toward more capable AI agents, suggesting incremental tuning of reasoning depth and instruction following on top of the prior foundation. In practical terms, V3.1 Terminus is best suited to tasks where reliable function selection, response formatting, and tool-augmented workflows matter more than raw open-ended generation, giving builders a dependable text model for agent prototypes, automated pipelines, and other reasoning-driven use cases.
DeepSeek V3.1 Terminus is positioned as an updated, agent-oriented language model in the DeepSeek family, arriving shortly after the company's earlier V3.1 release. It is designed as a text-only system that emphasizes step-by-step reasoning, function calling, streaming responses, structured output, and adjustable temperature control. The model's design intent reflects DeepSeek's broader shift toward assistant behavior that can plan, invoke tools, and return well-formed data alongside natural language answers, making it a fit for developer-facing applications that blend conversation with programmatic actions. As a hosted variant served from China-region infrastructure, it inherits the practical profile of a production language model rather than a research artifact. At its core, the model continues the lineage established by V3.1, refining agent-friendly capabilities for tool calling and structured interaction rather than introducing a wholly new architecture. According to reporting on the launch, this iteration is framed as a steady advancement on the path toward more capable AI agents, suggesting incremental tuning of reasoning depth and instruction following on top of the prior foundation. In practical terms, V3.1 Terminus is best suited to tasks where reliable function selection, response formatting, and tool-augmented workflows matter more than raw open-ended generation, giving builders a dependable text model for agent prototypes, automated pipelines, and other reasoning-driven use cases.
Transparent token rates
Rates are shown per one million tokens. Combined means one million input plus one million output tokens.
Alibaba (China)
DeepSeek-V3.1-Terminus comes just two months after the Chinese start-up launched V3.1, its most advanced model to date.
Alibaba (China)
Discover DeepSeek-V3.1-Terminus, the new hybrid reasoning model. Our review covers its agentic AI capabilities and how to get started.
Alibaba (China)
DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's performance in coding and search agents. $0.27 per millio
Alibaba (China)
Date: 2026-04-24