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Language model

DeepSeek V4 Flash 0731

DeepSeek

Released
July 31, 2026
Data date
September 26, 2026

DeepSeek V4 Flash 0731 is the dated V4-Flash checkpoint from July 31, 2026. Its model card lists MIT, very long context, and a recommended maximum output of 384,000 tokens at the higher reasoning levels. The date separates it from the current deepseek-flash route.

DeepSeek-V4.1-Flash is the current API reference; DeepSeek V4 Flash 0731 remains the concrete 0731 artifact.

Specifications and access

SpecificationValue and source
Weights
Open weightsSource
Access
Parameters
284 billionSource
Active parameters
13 billionSource
Context window
1,000,000 tokensSource
Maximum output
384,000 tokensSource
Knowledge Cutoff
May 2025Source
License
Inputs
TextSource
Outputs
TextSource
Reasoning
Tool calling