Is there a Vector model that can generate stroke only outputs ?

Hello,

I'd like to know if there is a model that can output line art vector graphics using stroke only ?
The ones that I found (https://www.recraft.ai/ or https://www.kittl.com/feature/ai-text-to-vector) are doing great job but they generate images that contains closed shapes with fills.

I'd like to know if any of you know the existence of a model that could generate output with stroke only (ideally only path but could also be basic shapes)