A couple of other people in the thread are using it too apparently. They're the Microsoft TROCR models. You do need a moderate amount of software to deskew, process, and segment the image before handing it to the model but after that it's typically extremely accurate in my experience.

Setting up my software online and monetizing it is next in the queue after my current side project. Although I haven't checked the model licenses.

Have you tried uploading image of your handwriting to ChatGPT interface with ChatGPT 4o?

And what the results were? And if not could you try and let us know what the results are.