OSONE you are active duty right?
Because i'm not and my recruiter told me 400 words.
I feel like there's a lot of confusion around what the boards are looking for, at least as far as word count is concerned, because the different boards give more or less weight to the motivational statement. Also, the civilian form doesn't give a word count suggestion, so then you have recruiters throwing out different word count suggestions. All this leads to a lot of confusion around what civilian applicants should be targeting.