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AI · August 22, 2025

DeepSeek-V3.1

The best-performing and best of value open-source AI model

DeepSeek-V3.1 launched on August 22, 2025 with 417 votes, #63 of 8,530 launches that month and more than 99% of that year's launches. The site was not reachable when checked in September 2026.

In plain words

DeepSeek-V3.1 is an artificial intelligence model that operates in two modes: thinking mode and non-thinking mode. The hybrid approach allows users to choose between extended reasoning capabilities or faster responses depending on their needs. It is designed for developers and organizations seeking flexible AI solutions that can handle both complex problem-solving and straightforward tasks.

written from the facts on this page · September 2026

From the sources

DeepSeek-V3.1 is a hybrid model that supports both thinking mode and non-thinking mode.

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