Yeah it's also possible they temporarily took it down because of the flood of users that were slowing down the whole site for everyone. Potential for it to be back but the rate limits are really low, something like 2 queries per user per day
It's possible they temporarily removed it because it broke the whole anonymised part of that. It literally had information about itself in its system prompt and people could deduce it was running on an OAI API because of its API error response formatting. Either OAI collected all the data they need or it'll be back with some changes.
Sorry, should have clarified. The part of the site that states the model is currently unavailable links to their evaluation policies which is the link used for this submission :)