Given that Claude seems so lazy in chat （especially with technical search topics）， it seems pretty telling about how a harness can make a model far more independent and thorough.

GPT 5.5， and many of OpenAI's recent models， seem incredibly thorough -- like they won't give up -- and the codex harness is a much lighter change on the model.

Of course I have a lot of uncertainty here， but it's surprising to me how weak Claude's search is when I try the Claude app again. I only use ChatGPT for research， but Claude Code can do wonderful things like getting exactly the right figures from papers I know and insert them into a slide deck.

Interesting times ahead！