DeepSeek-V4.1-Flash API
About
Build advanced reasoning agents with DeepSeek-V4.1-Flash, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers available completely free of charge, native tool calling support, open weights architecture. Access DeepSeek-V4.1-Flash via the Azure API with up to 128K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
Free
Output
Free
Frequently Asked Questions
DeepSeek-V4.1-Flash by Azure costs Free per 1M input tokens and Free per 1M output tokens.
Model Details
ID
deepseek-v4.1-flash
Provider
AzureFamily
deepseek-flash
Release Date
Sep 10, 2026
Knowledge Cutoff
May 1, 2025
API Integration