DeepSeek

Deepseek Ai/DeepSeek V3.1 Terminus

Name: Deepseek Ai/DeepSeek V3.1 Terminus
Brand: DeepSeek
Price: 0.27 USD
Availability: InStock

Deepseek Ai/DeepSeek V3.1 Terminus is a large language model by DeepSeek with support for function calling. It supports a 164K token context window with up to 164K tokens of output. Priced at $0.27 per million input tokens and $0.95 per million output tokens, it is one of the most cost-efficient options in its class. Access Deepseek Ai/DeepSeek V3.1 Terminus through Inworld Router with OpenAI SDK compatibility, built-in failover, and intelligent routing across providers.

→Function Calling

Use This Model

Step 1 — Create Router

curl --location 'https://api.inworld.ai/router/v1/routers' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "name": "compare-frontier-models",
  "defaultRoute": {
    "route_id": "default",
    "variants": [
      {
        "variant": {
          "variant_id": "deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus-a",
          "model_id": "deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "deepinfra/deepseek-ai/DeepSeek-R1-0528-b",
          "model_id": "deepinfra/deepseek-ai/DeepSeek-R1-0528"
        },
        "weight": 33
      },
      {
        "variant": {
          "variant_id": "deepinfra/deepseek-ai/DeepSeek-R1-Distill-Llama-70B-c",
          "model_id": "deepinfra/deepseek-ai/DeepSeek-R1-Distill-Llama-70B"
        },
        "weight": 34
      }
    ]
  }
}'

import requests

response = requests.post(
    "https://api.inworld.ai/router/v1/routers",
    headers={
        "Authorization": "Basic <your-api-key>",
        "Content-Type": "application/json",
    },
    json={
        "name": "compare-frontier-models",
        "defaultRoute": {
            "route_id": "default",
            "variants": [
                {
                    "variant": {
                        "variant_id": "deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus-a",
                        "model_id": "deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "deepinfra/deepseek-ai/DeepSeek-R1-0528-b",
                        "model_id": "deepinfra/deepseek-ai/DeepSeek-R1-0528"
                    },
                    "weight": 33
                },
                {
                    "variant": {
                        "variant_id": "deepinfra/deepseek-ai/DeepSeek-R1-Distill-Llama-70B-c",
                        "model_id": "deepinfra/deepseek-ai/DeepSeek-R1-Distill-Llama-70B"
                    },
                    "weight": 34
                }
            ]
        }
    },
)
print(response.json())

const response = await fetch(
  "https://api.inworld.ai/router/v1/routers",
  {
    method: "POST",
    headers: {
      Authorization: "Basic <your-api-key>",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      name: "compare-frontier-models",
      defaultRoute: {
        route_id: "default",
        variants: [
          {
            variant: {
              variant_id: "deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus-a",
              model_id: "deepinfra/deepseek-ai/DeepSeek-V3.1-Terminus",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "deepinfra/deepseek-ai/DeepSeek-R1-0528-b",
              model_id: "deepinfra/deepseek-ai/DeepSeek-R1-0528",
            },
            weight: 33,
          },
          {
            variant: {
              variant_id: "deepinfra/deepseek-ai/DeepSeek-R1-Distill-Llama-70B-c",
              model_id: "deepinfra/deepseek-ai/DeepSeek-R1-Distill-Llama-70B",
            },
            weight: 34,
          },
        ],
      },
    }),
  }
);
const data = await response.json();
console.log(data);

Step 2 — Chat Completion

curl --location 'https://api.inworld.ai/v1/chat/completions' \
--header 'Authorization: Basic <your-api-key>' \
--header 'Content-Type: application/json' \
--data '{
  "model": "inworld/compare-frontier-models",
  "messages": [{"role": "user", "content": "Hello!"}]
}'

Deepseek Ai/DeepSeek V3.1 Terminus pricing and providers

Access Deepseek Ai/DeepSeek V3.1 Terminus through DeepInfra via Inworld Router or Realtime API. By using the AI provider(s) below you acknowledge you reviewed and agree to their terms listed in the Legal section under the AI provider's name.

					Capabilities	Input modalities	Output modalities
DeepInfra	163.8K	163.8K	$0.27	$0.95

Other DeepSeek models available through Inworld

Compare Deepseek Ai/DeepSeek V3.1 Terminus with other DeepSeek models available through Inworld Router or Realtime API.

					Capabilities
Deepseek Ai/DeepSeek R1 0528	163.8K	163.8K	$0.50	$2.15
Deepseek Ai/DeepSeek R1 Distill Llama 70B	131.1K	131.1K	$0.70	$0.80	—
Deepseek Ai/DeepSeek V3	163.8K	163.8K	$0.32	$0.89
Deepseek Ai/DeepSeek V3 0324	163.8K	163.8K	$0.20	$0.77
Deepseek Ai/DeepSeek V3.2	—	—	$0.26	$0.38	—
Deepseek Ai/DeepSeek V4 Flash	—	—	$0.10	$0.20	—
Deepseek Ai/DeepSeek V4 PRO	—	—	$1.30	$2.60	—
Deepseek V4 Flash	—	—	$0.14	$0.28	—
Deepseek V4 PRO	—	—	$0.435	$0.87	—

Start building with Deepseek Ai/DeepSeek V3.1 Terminus

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