It's an invite only OpenAI API beta: https://beta.openai.com/. Currently (and probably for the foreseeable future) the model isn't feasible to run on commodity hardware anyway, so the API is the only way to go).
The paid model of Dragon in the settings uses GPT3. You don't have access to playing around with the parameters, but by using the custom prompt is still really amazing.
If I subscribe, is it easy to find the custom prompt? Can I get it to generate non dungeon and dragon related content? I'm thinking of giving it a whirl.
