Short answer: compare the workflow around the image as carefully as the image model itself. A capable alternative should make it easy to use references, review a batch, edit the result, create motion from a still, and revisit the work later.
1. Compare the creation workflow, not only the first output
One-off generators can produce an impressive image and still create extra work afterward. Look for a project view that retains the prompt, output, settings, and source media. That makes a strong result reusable instead of disposable.
2. Check reference and edit support
For many image tasks, a reference image is more valuable than an additional style word. Check how many files the product accepts for the selected model, whether it preserves the source in the project, and whether you can continue editing from a completed output.
3. Decide whether image-to-video matters
If a finished still might become a motion study, choose a workspace that makes the handoff explicit. You should be able to select an image, start a new video, and see the source attached before sending the request.
4. Review limits and queue behavior
Free-to-start tools vary in batch size, daily usage, queue capacity, output quality, and supported durations. Read the limits shown in the product instead of relying on old comparison pages, because availability changes.
5. Use a workspace when iteration is the goal
Motion16 brings supported image and video workflows into one project history. It is designed for creating, comparing, editing, and carrying a selected image into a new video workflow without losing context.