Just for further clarification - this is referring to ChatGPT web (the main chat.openai.com frontend), and is talking about the "All tools" GPT-4 mode, which is only available to some users for now (the title is wrong).
Some other things to take from that prompt: they've updated the knowledge cutoff of the model to April 2023, which is quite good.
Still, since the OpenAI's DevConf is on November 6th [1], I'm pretty sure they'll finally allow using some of these things for API usage, perhaps even lower prices or maybe make GPT-4-32K GA?