The only benefit as I see it is it being very lightweight + providing tighter interop with C++ classes and C++11 shenanigans.<p>For me personally, there&#x27;re real reasons not to use it -- e.g., no support for structured&#x2F;record arrays: <a href="https:&#x2F;&#x2F;github.com&#x2F;pybind&#x2F;pybind11&#x2F;issues&#x2F;67" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;pybind&#x2F;pybind11&#x2F;issues&#x2F;67</a>