We do have plans to support GPT-4.5, but it’s currently in preview, and there’s still a chance it could be pulled or changed before full release.
Also worth noting—GPT-4.5 is about 30x more expensive than the current model, so enabling it right now would burn through your credits extremely fast.
We’re keeping a close eye on it and plan to roll it out once it’s stable and makes sense for real usage.