This was announced on the OpenAI Developers X account:
Here’s are some notable facts about this model:
Thanks for the update.
Interesting. so the chatgpt model is meant for the communication side while the others are meant for the background services. Makes sense!
It seems like the ideal paradigm now involves skeleton functions from the communication to invoke these background models if you don’t have any sort of classifier. Less token usage and better accuracy?
It would be nice if we could separate models for different tasks using the assistants framework. For example the “chatty” model is typically used, but when a function task is potentially invoked the more “technical” model can be used in it’s place
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I know some user were looking for a Voice or Video mode update surprise, but i rather have the sever side ready for those features than a broken Advance and Video mode. Were getting closer to fall 
very excited.
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Will this model be getting structured outputs? 
Hi, is it possible that the invocation of GPTs with “@” has been removed? I was never able to use it from the macOS app, but now I can’t use it from the web either. I type “@” and nothing appears. It was working until yesterday.