Using DeepSeek V3.1 Terminus on Vercel AI Gateway

Implementation guide · DeepSeek · DeepSeek

ServerlessOpen Weights

Vercel AI Gateway exposes DeepSeek V3.1 Terminus through model ID deepseek/deepseek-v3.1-terminus. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-29. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Vercel AI Gateway and generate an API key.
  2. 2
    Use the Vercel AI Gateway SDK or REST API to call deepseek/deepseek-v3.1-terminus — see the documentation for request format.
  3. 3
    You'll be billed $0.27/1M input, $1.00/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

Install
pip install openai
API key
AI_GATEWAY_API_KEY
Model ID
deepseek/deepseek-v3.1-terminus

creator/model-name e.g. kwaipilot/kat-coder-pro-v2

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AI_GATEWAY_API_KEY"],
    base_url="https://ai-gateway.vercel.sh/v1"
)
response = client.chat.completions.create(
    model="deepseek/deepseek-v3.1-terminus",
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Pricing on Vercel AI Gateway

TypePrice (per 1M)
Input tokens$0.27
Output tokens$1.00

Capabilities

Structured Outputs

About DeepSeek V3.1 Terminus

DeepSeek: DeepSeek V3.1 Terminus available via OpenRouter. Pricing: $0.21/1M input, $0.79/1M output.

Full model details →

Model Specs

Released2025-09-22
Parameters671B total, 37B active (MoE)
Context164k
ArchitectureDecoder Only

Also available on(3)

OpenRouter$0.21/1MNovita AI$0.27/1MNVIDIA NIM
Compare all providers →

Provider

Vercel AI Gateway

Vercel