Comment by Shark1n4Suit

That's the key question. It feels like many of these tools are trying to solve a systems-level problem (cross-language model execution) at the application layer (with a Python library).

A truly universal solution would likely need to exist at a lower level of abstraction, completely decoupling the application's language from the model's runtime. It's a much harder problem to solve there, but it would be a huge step forward.