Grok Imagine Video 1.5 and Runway Gen 4 for real workflows
Grok Imagine Video 1.5 is provided by xAI and emphasizes image to video and up to 1080p. Runway Gen 4, from Runway, emphasizes character consistency and scene control. The stronger option depends on the input, output constraints, and review standard.
How to test Grok Imagine Video 1.5 vs Runway Gen 4
Run the same prompt, source context, output format, and acceptance criteria through both models. Score accuracy, instruction following, edit time, latency, and current cost separately. Repeat the test on several representative tasks before standardizing on either model.