DeepSeek-V4.1-Flash

deepseek

Introduce DeepSeek-V4.1-Flash, a multimodal Mixture-of-Experts (MoE) model with 552B backbone parameters and support for contexts of up to one million tokens.

Context
1.0M
Input price
$0.2/1M tokens
Output price
$0.6/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Fine-tuning

Details

Model IDdeepseek-ai/DeepSeek-V4.1-Flash
Provider DeepInfra
Creator DeepSeek
Family—
Licensedeepseek
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightYes
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output—
Reasoning tokensYes
Knowledge cutoff—
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

Chat CompletionsPOST
Generate chat responses with messageshttps://api.deepinfra.com/v1/openai/v1/chat/completions

Pricing

Input
$0.2
Output
$0.6
Cache write
—
Cache read
$0.01
Batch in
—
Batch out
—

API

GET/v1/models/deepinfra/deepseek-ai/DeepSeek-V4.1-Flash

DeepSeek-V4.1-Flash

deepseek-ai/DeepSeek-V4.1-Flash

Introduce DeepSeek-V4.1-Flash, a multimodal Mixture-of-Experts (MoE) model with 552B backbone parameters and support for contexts of up to one million tokens.

Changes · 2 entries
deepseek-ai/DeepSeek-V4.1-Flashcreateca7a400Nov 2, 2026, 03:02 AM
deepseek-ai/DeepSeek-V4.1-Flashcreate17bcfbfSep 11, 2026, 06:36 AM