DeepSeek-V4

In plain words

DeepSeek-V4 is an open-source series of mixture-of-experts language models designed for developers and researchers. The V4-Pro variant contains 1.6 trillion parameters while the V4-Flash offers 284 billion parameters, both supporting a 1 million token context window. The models use a hybrid attention architecture to minimize computational and memory requirements, making large-context processing more efficient and accessible for development teams building AI applications.

written from the facts on this page · September 2026

From the sources

DeepSeek-V4 Preview is a new series of highly efficient MoE language models, featuring V4-Pro (1.6T params) and V4-Flash (284B params). Both models support a 1 million token context window by default, utilizing a novel hybrid attention architecture to drastically reduce compute and memory costs.

We’re on a journey to advance and democratize artificial intelligence through open source and open science.

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