A is LTX 2.5 Fast. B is H3 Quality. Each pair shares the same original image, seed, and scene direction on Phoenix RTX 5090 workers. Play both together and switch the sound between models.

Both use their production workflows and deliver 1920 × 1080 with generated audio. LTX renders at 1280 × 704; H3 at 1376 × 768. Native size and render times are shown with every cut. This test batch has your highest priority.