The "2019 model" is still better than most of the AI models out there, including Bard. Also they're releasing a new one very soon, but it'll likely be more restricted. The downside is the comparatively high prices and therapy is on the border of violating its usage policy (diagnosing people with mental health): https://openai.com/policies/usage-policies

And yeah, I fine tuned mine on curie. It has some bugs, but does what I expected it to do (help with writing dialogue).