DeepSeek: DeepSeek V3.1 Terminus

Public pricingIntelligence 79/100Medium memoryDeep thinkingTool use

DeepSeek: DeepSeek V3.1 Terminus is a text model for agent workflows and tool use. It combines reliable tool use and agent behavior with a 164K tokens context window and a low-cost profile. Use it for agent workflows, tool use, and orchestration when quality, speed, and cost matters. It is a practical choice for teams that need reliable output, flexible deployment, and room to scale.

Input

$0.21/1M

Output

$0.79/1M

Cached

$0.13/1M

Batch

$0.20/1M

Calculate your DeepSeek V3.1 Terminus bill.

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What would DeepSeek V3.1 Terminus cost you?

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Technical specifications

DeepSeek V3.1 Terminus at a glance.

Memory

163,840

tokens

Max reply

65,536

tokens

Memory tier

Medium

a long report or a codebase file

Tokenizer

deepseek

Released

Sep 2025

Training cutoff

May 2025

Availability

Public pricing

Status

active

Benchmarks

Quality benchmarks

Independent evaluations from public leaderboards. Higher is better.

  • aa_intelligence_index

    28

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick DeepSeek V3.1 Terminus

  • Multi-step reasoning, research agents, or hard math.
  • Agentic workflows that call tools or APIs.
  • High-volume workloads where unit cost matters.

When to look elsewhere

  • Your workload involves images — pick a vision-capable model instead.

Alternatives

Similar models to compare.

FAQ

DeepSeek V3.1 Terminus — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, DeepSeek V3.1 Terminus costs roughly $47 per month. Input is $0.21 /1M tokens and output is $0.79 /1M tokens.
DeepSeek V3.1 Terminus has a 163,840-token context window (medium memory — a long report or a codebase file). That means you can fit about 30,720 words of input and history in a single call.
Beyond text generation, DeepSeek V3.1 Terminus supports deep step-by-step reasoning, calling functions / tools, strict JSON output. It streams replies by default.
DeepSeek V3.1 Terminus was released in September 2025, with training data cut off around May 2025.
Models in a similar class include DeepSeek V3.2, DeepSeek V3.1, DeepSeek V3.2 Exp. The "Similar models" section below this FAQ links into each.

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