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 Pioneer API with up to 131K 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
131K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.56
Output
$1.68
Caching (per 1M tokens)
Read
$0.56
Write
$0.56
Frequently Asked Questions
DeepSeek-V3.1 by Pioneer costs $0.56 per 1M input tokens and $1.68 per 1M output tokens. Cached reads cost $0.56 per 1M tokens. Cache writes cost $0.56 per 1M tokens.
Model Details
ID
deepseek-ai/DeepSeek-V3.1
Provider
PioneerFamily
deepseek
Release Date
Aug 21, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
PIONEER_API_KEY
API Base URL
https://api.fastino.ai/v1