Runway Gen4 and Nanobanana 2 for real workflows
Runway Gen4 is provided by Runway and emphasizes professional quality and creative control. Nanobanana 2, from Google, emphasizes high quality and text in images. The stronger option depends on the input, output constraints, and review standard.
How to test Runway Gen4 vs Nanobanana 2
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.