The verdict
Luma's distinctive trait — now carried by the Ray3 model line with native HDR — is physics fidelity — motion behaves the way a viewer expects, gravity holds, objects don't morph mid-arc. That accuracy is exactly what makes it strong for product visualization and architectural work where physical plausibility matters more than artistic flair. Where it underperforms: creative storytelling. The model is calibrated for realism, which means stylized aesthetics, fantasy scenes, and "unrealistic on purpose" prompts can land in an uncanny valley. The free tier is usable rather than a demo, and generation speed is competitive with the category leaders. If your output needs to look like actual footage of actual things, Luma is among the strongest picks here. If you're making music videos or cinematic shorts, the realism becomes a creative constraint rather than a feature.