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Vercel AI Gateway

DeepSeek V3.1 Terminus API

Vercel AI Gateway
About

Build advanced reasoning agents with DeepSeek V3.1 Terminus, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.27/1M input and $1.00/1M output tokens, native tool calling support, open weights architecture. Access DeepSeek V3.1 Terminus via the Vercel AI Gateway API with up to 66K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
131K

Tokens

Input Limit
131K

Tokens

Max Output
66K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.27
Output
$1.00
Frequently Asked Questions

DeepSeek V3.1 Terminus by Vercel AI Gateway costs $0.27 per 1M input tokens and $1.00 per 1M output tokens.

Model Details
ID
deepseek/deepseek-v3.1-terminus
Provider
Vercel AI Gateway
Family
deepseek
Release Date
Sep 22, 2025
Knowledge Cutoff
Jul 1, 2025
API Integration
NPM Package
@ai-sdk/gateway
Environment Variables
AI_GATEWAY_API_KEY
Documentation