Model request: GPT 5.6 Luna xhigh or max reasoning levels

It would be great to add support for GPT‑5.6 Luna xhigh or max reasoning levels in T3 Chat.

OpenAI recently changed the pricing for its Luna and Terra models, making GPT‑5.6 Luna xhigh and max reasoning levels considerably cheaper than many other available options. Adding these models could reduce costs while maintaining a high level of intelligence.