DeepSeek Chat V3.1 API
About
Build advanced reasoning agents with DeepSeek Chat V3.1, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.20/1M input and $0.80/1M output tokens, native tool calling support, open weights architecture. Access DeepSeek Chat V3.1 via the TensorX API with up to 164K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsOpen
Limits
Context Window
164K
Tokens
Input Limit
164K
Tokens
Max Output
164K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.20
Output
$0.80
Caching (per 1M tokens)
Read
$0.05
Write
$0.25
Frequently Asked Questions
DeepSeek Chat V3.1 by TensorX costs $0.20 per 1M input tokens and $0.80 per 1M output tokens. Cached reads cost $0.05 per 1M tokens. Cache writes cost $0.25 per 1M tokens.
Model Details
ID
deepseek/deepseek-chat-v3.1
Provider
TensorXFamily
deepseek
Release Date
Aug 21, 2025
Knowledge Cutoff
Nov 1, 2024
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
TENSORX_API_KEY
API Base URL
https://api.tensorx.ai/v1