Word Express - GPT-Based Word Add-In

It is the first serious effort of integrating OpenAI GPT services into desktop version of Microsoft Word, at least that I know about.... Obviously, you need to have Open AI API Key in order to use it. It supports both GPT 3 and 3.5 API. GPT-4 API is also supported but still not available for public use (as of this writing). Microsoft promised to do the same but did not indicate whether it meant online or desktop version, or both. Anyway, this is just a beginning; I have a long history of competing with Microsoft, and not always losing... I have great plans for a plethora of additional features, but it all depends on the acceptance of the initial offering.