Depends on what you need. Rust's machine-learning tooling isn't very advanced, but then again neither is C++ if you want high-level features. You might want to

Depends on what you need. Rust's machine-learning tooling isn't very advanced, but then again neither is C++ if you want high-level features. You might want to use neither, if you can get away with a simpler language like Python. Between Rust and C++ I tend to pick Rust for better tooling and simpler control over LLVM. It's entirely up to you, but I wouldn't be caught dead running Valgrind on my multithreaded machine learning app.