> I've only been using it a couple of weeks, but in my opinion, Opus 4.5 is the biggest jump in tech we've seen since ChatGPT 3.5.

Over Sonnet 4.5 maybe, but that's ignoring Opus 4.1 as well as Codex 5.1 Max.

In terms of capabilities, I find Opus 4.5 to be essentially identical to Codex 5.1 Max up until context starts to fill up (by which I mean 50% used) which happens much more quickly with Opus 4.5 than Codex AFAICT.

I think Codex is slower (a lot?) so it's not like it's just better, but I've found there are some tasks Opus can't do at all which Codex has no problem with, I think due to the context situation.

In any case it doesn't seem like a leap.