DeepSeek V3.1 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...

by DeepSeek

Overview

Quick stats across all benchmark runs.

Score

—

10 benchmarks

Avg Latency

27.9s

22 requests

Pricing

$0.27 in / $0.95 out

per 1M tokens

Context

164K

tokens

Alternatives

Models with similar or better quality but different tradeoffs

No alternatives found

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Benchmark Performance

How this model performs across different benchmarks

Benchmark	Score	Rank
Money Boy Cultural Literacy Test	52%	30 / 107

Price vs Performance

Compare cost efficiency across all models

Current model (baseline)

Other models (relative score)

Y-axis shows score difference from shared benchmarks. X-axis uses log scale.

Score Over Time

Performance trends across all benchmark runs

Benchmark Activity

Number of benchmark runs over time

Quickstart

View on OpenRouter

Get started with this model using OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "deepseek/deepseek-v3.1-terminus",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

Get your API key at openrouter.ai/keys

Other Models from DeepSeek

Compare performance with other models from the same creator

Model	Latency	Cost/1M	Score
DeepSeek V4 Pro	12.3s	$0.65	59%
DeepSeek V4 Flash	5.0s	$0.17	55%
DeepSeek V3.2 Speciale	149.1s	$0.36	52%
DeepSeek V3.2	36.7s	$0.32	40%
DeepSeek V3.1	52.2s	$0.50	—
DeepSeek R1 0528 Qwen3 8B	—	$0.07	—
DeepSeek Prover V2	—	$1.34	—
R1 Distill Qwen 14B	—	$0.15	—
R1 Distill Qwen 32B	53.5s	$0.29	—
R1	109.7s	$1.60	—
R1 0528	120.7s	$1.32	—
DeepSeek V3.2 Exp	79.4s	$0.34	—
DeepSeek V3	19.8s	$0.60	—
R1 Distill Llama 70B	33.8s	$0.75	—
DeepSeek V3 0324	15.2s	$0.49	—