Following a few basic principles - I don't use paid-AI - only free services - so I regularly use ChatGPT to check the code generated by Claude and any others I might have limited access to.

I've recently settled on Deepseek4 for one of my projects, and had it review other code generated by other models, and .. yeah, that was quite eye-opening. Someone in the frontier-models part of the world is definitely paying attention to the AI slop generated by the other models, because having one AI checking the results of another AI has been quite fruitful, lately.