> which makes GLM-5.2 slightly closer to Opus 4.5 than Opus 4.6 is

So, glm is more related to opus than opus to opus?

Is the classification model available, would be cool to have this in the toolbox.

Here is the harness - https://github.com/litemars/LLM-Fingerprinter .

Classifier is an ensemble of Random Forest (45%) + SVM (45%) + MLP (10%).

Code is very easy to run using your own OpenRouter key, here is a training gist - https://gist.github.com/CoolSpot/bcd4545daf763d9196dea3bb0b5... .