VideoGen-Agent: RL-trained tool-using agent lifts video generation by 19.1 points

机器之心 · wechat · 2026-10-09

VideoGen-Agent, built on Qwen3-VL-8B-Instruct, learns via SFT plus multi-task RL (rewards weighted 0.1/0.4/0.5 for call validity, tool use, and video quality) to orchestrate retrieval, simulation, and verification tools before generating video. On the new 600-prompt VABench it scores 75.6 with Toolset1 vs a 56.5 base generator (+19.1), rising to 86.1 after swapping in stronger generation tools without retraining the agent. In human evals, 84.3% preferred its output over Seedance 2.0. Ablations show RL adds 6.4 points over SFT, and the policy zero-shots to 73.2 on unseen procedural-knowledge-plus-identity combos, spontaneously combining text and image retrieval in 84% of traces.

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