Hi, I have a few questions regarding the AI models and chat functions that I would appreciate your assistance with:

I noticed that Claude Opus is not listed among the AI models. Could you please clarify why it has been removed?

When using the chat function to generate answers, I often encounter a limit where it stops after 4 to 5 questions. After attempting to continue, it takes several tries before it generates additional answers. Could you explain why this happens, and is there a possibility to increase the output limit for responses?

As a tier 3 user, am I allowed to use the chat function for generating long-form articles?

Thank you for your help!