AgenticMarket
DeepSeekOpen WeightCutoff: 2025-03-31Released: 2025-09-22V3.1 Terminus
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...
ARCHITECTURE & LIMITS
DeepSeekBENCHMARK EVALUATIONS & CODE METRICS
Verified scores from SWE-bench and Artificial Analysis.
Independent coding benchmark evaluating syntax, algorithms, and code completion
Broad multi-domain reasoning, science, and knowledge retrieval
Autonomous multi-step tool use, API calling, and task execution
TOKEN COST CALCULATOR
Estimate production API costs for V3.1 Terminus.
COMMUNITY ENGINEERING EVALUATIONS
Verified ratings across 4 core software engineering dimensions.
Refactoring accuracy, syntax correctness, and adherence to design patterns.
Zero hallucinations, strict constraint compliance, and negative prompt respect.
Time-to-first-token (TTFT) and throughput tokens per second.
Token pricing economics relative to intelligence quality and output volume.
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RECOMMENDED AGENT SKILLS FOR V3.1 Terminus
boardroom
/cs:boardroom <brief> — 6-phase multi-role deliberation across the C-suite with Phase 2 isolation, critic pre-screen, and synthesis. Outputs a board memo. Use when a decision spans multiple executive domains — e.g. a pricing change touching finance, positioning, and product, or a raise-vs-cut runway call.
FREQUENTLY ASKED QUESTIONS ABOUT V3.1 Terminus
What are the input and output token prices for V3.1 Terminus?+
V3.1 Terminus costs $0.27 per 1M input tokens and $1.00 per 1M output tokens. Cached input reads cost $0.14 per 1M tokens.
Does V3.1 Terminus support tool calling and agent execution?+
Yes, V3.1 Terminus natively supports tool calling, parallel function execution, and structured agent workflows.
What is the context window of V3.1 Terminus?+
V3.1 Terminus features an active context window of 163,840 tokens with a maximum single-turn output of 32,768 tokens.
What AI Agent Skills work best with V3.1 Terminus?+
Because V3.1 Terminus is optimized for agentic tool calling and code reasoning, it pairs well with Agent Skills like Boardroom, SEO Audit, and UI/UX Pro Max.