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T3-Video: Native 4K Video Generation from a 1.3B Model

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T3-Video retrofits the forward logic of Wan2.1-T2V-1.3B with multi-scale weight-sharing window attention, generating 3840x2176 video natively with no upscaler; on 4K-VBench it gains +4.29 VQA while running over 10x faster.

Video Generation Text-to-Video Window Attention Wan2.1 Tencent Youtu Lab

Category: world-model

Author: @HuggingApps

Date: 2026-10-08T00:00:00

Duration: 16.2s

Source: https://x.com/HuggingApps/status/2108103602715922897

Reference: https://arxiv.org/abs/2512.13492

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