DeepSeek V3.1 API
About
Build advanced reasoning agents with DeepSeek V3.1, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.56/1M input and $1.68/1M output tokens, native tool calling support, open weights architecture. Access DeepSeek V3.1 via the LLM Gateway API with up to 33K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
text
Reasoning
Yes
Structured Output
Limits
Context Window
128K
Tokens
Input Limit
128K
Tokens
Max Output
33K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.56
Output
$1.68
Caching (per 1M tokens)
Read
$0.11
Frequently Asked Questions
DeepSeek V3.1 by LLM Gateway costs $0.56 per 1M input tokens and $1.68 per 1M output tokens. Cached reads cost $0.11 per 1M tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
LLMGATEWAY_API_KEY
API Base URL
https://api.llmgateway.io/v1