DeepSeek: DeepSeek V3.1 Terminus

DeepSeek V3.1 Terminus is a text-only model with a 163,840-token context window and support for tool use and reasoning, making it suitable for multi-step workflows, long-document processing, and agentic tasks. It does not accept image or audio input, and structured output support is unconfirmed. At $0.27 per million input tokens and $0.95 per million output tokens, it sits at the budget end of the market. Its blended benchmark score of 46.2 covers only 3 benchmarks, so the performance picture is limited and should be treated with caution. Buyers prioritizing low cost for text-based, tool-heavy tasks may find it worth testing, but those who need stronger benchmark validation or multimodal support should compare it carefully against better-documented alternatives before committing.