I can replicate a vaguely similar result (gpt-5.2 produces the correct answer immeditely, Opus 4.6 "thinks aloud" in the output for two lines and then produces

I can replicate a vaguely similar result (gpt-5.2 produces the correct answer immeditely, Opus 4.6 "thinks aloud" in the output for two lines and then produces the correct answer), but I worry that 5.2 might be thinking under the hood here.