There are lots of AI-sloppy tells, starting from, let's see:

* the web site's layout (eyebrows, glows, em-dashes, middots, that certain breathless tone in the pricing box) (edit: see the source for https://vocalslice.com too)

* the changelog listing, eg. the fact that you can search by language code as a headline feature

* in the app, things like "Click here to choose an audio file to transcribe – swap it any time" are Claude-like copy; I'd be surprised if you _couldn't_ change the audio file at any time?

* looking at https://vocalslice.com/demo.webp, another claudeism is the glowy status indicator blob, it really likes to add that by default.

If OP gets a business going with this, more power to them and all the best, but it really is something that's buildable pretty easily with transformers.js and models like onnx-community/whisper-small_timestamped. (Speaking of which, I hope OP is hosting the models somewhere themselves and not trusting, say, Hugging Face with the continuity of their business.)