TLA is pretty excellent for the job it does. In the past, the general issue with tools like this has been keeping the implementation code in sync with the model. Implementing verification tests from model across to the implementation can be tedious and very time consuming.

Now that we have assistants that excel at tedious and time consuming tasks, it’ll be interesting to see if the dominant approach is still using dedicated modeling languages like TLA+ with generated verification harnesses. Or if it’s easier to use something closer to the implementation, similar to what the Stateright project [1] is trying to do.

[1] https://github.com/stateright/stateright