Those devices don't work for everyone and they aren't new (just the ai). It's basically a feedback device. Its the equivalent of wearing prescription glasses. Once you remove the device, you will go back to stuttering as you were. Here is a study on the [long term effectiveness](https://pubmed.ncbi.nlm.nih.gov/23218216/). You should look beyond ai before posting. The stuttering community suffers from a lot misinformation and pseudoscience being pushed to us.