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Language model

DeepSeek V4 Pro 0813

DeepSeek

Released
August 12, 2026
Data date
September 26, 2026

DeepSeek V4 Pro 0813 is the official V4-Pro release associated with the general-availability API release announced on August 13, 2026. The model card releases the weights under MIT and recommends up to 384,000 output tokens at the higher reasoning levels.

The DeepSeek-V4-Pro alias has been temporarily routed to DeepSeek-V4.1-Flash since September 14, 2026; the 0813 weights remain the released snapshot.

Specifications and access

SpecificationValue and source
Weights
Open weightsSource
Access
Parameters
1,600 billionSource
Active parameters
49 billionSource
Context window
1,000,000 tokensSource
Maximum output
384,000 tokensSource
License
Inputs
TextSource
Outputs
TextSource
Reasoning
Tool calling