The gap neither tool covers
Neither tool generates a storyboard from your script. Boords generates individual AI frames from prompts you write, one at a time, with monthly caps. Storyboard Pro has no AI generation at all. If your starting point is a finished screenplay and your goal is a full visual sequence — boards, then motion, then a timed cut with voiceover — you are describing script-to-storyboard AI tools, a different category.
That is the category M Studio is in: it breaks down a script into shots, generates the frames with consistent characters, and continues into AI video, voiceover, sound, and a timeline you can export. Teams that evaluate Boords for AI boards and find the per-frame prompting workflow limiting are usually looking for this instead.