DeepSeek V3.1 Terminus on Vercel AI Gateway

DeepSeek · DeepSeek

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

Why use DeepSeek V3.1 Terminus on Vercel AI Gateway?

Vercel AI Gateway offers DeepSeek V3.1 Terminus with pay-as-you-go pricing at $0.27/1M input tokens. Vercel AI Gateway is a unified AI proxy providing a single OpenAI-compatible API endpoint to 275+ models from 25+ providers including Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, xAI, Alibaba, Amazon, ByteDance, Cohere, MiniMax, MoonshotAI, KwaiPilot, Black Forest Labs, Recraft, Voyage AI, NVIDIA, and more.

Compare DeepSeek V3.1 Terminus across 4 providers to find the best fit for your use case
Input / 1M
$0.27
Output / 1M
$1.00
Cache
read $0.135
Batch
Not sourced

Setup recipe

Python + curl
Install
pip install openai
Auth
export AI_GATEWAY_API_KEY=...
Call
import os
from openai import OpenAI
client = OpenAI(
    api_key=os.environ["AI_GATEWAY_API_KEY"],
Model ID
deepseek/deepseek-v3.1-terminus

Request example

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)

Gotchas

  • Use provider model ID "deepseek/deepseek-v3.1-terminus", not the LLMReference slug "deepseek-v3.1-terminus".
  • creator/model-name e.g. kwaipilot/kat-coder-pro-v2
  • The examples expect AI_GATEWAY_API_KEY; rename it only if your application config maps the new variable.

Compare DeepSeek V3.1 Terminus Across Providers

ProviderInput (per 1M)Output (per 1M)
NVIDIA NIM——
OpenRouter$0.21$0.79
Vercel AI Gateway$0.27$1.00
Novita AI$0.27$1.00

Pricing

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.

Get Started

Model Specs

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