I'm getting the same thing I got with Codex when I tried right now. I give it a command, and it keeps reading files and thinking for 5 min+, this never happens with Claude Code.
Oh I tried codex for the first time last night with gpt-5. It looked stuck twice when it used the grep tool (after working successfully for minute or so), and both times I canceled after seeing no output for more than a minute.
I tried GPT-5 in Cursor today and got the same thing - it started reading and thinking and thinking, and it was quite repetitive. It was unexpected. I wrote it off as "maybe the Cursor GPT-5 prompts are not refined yet".
Yeah, I honestly don't believe the hype for GPT-5 at all, although I do believe LLMs are awesome, but it feels still to me like they are chasing, e.g. Anthropic, but something is fundamentally off. I may be wrong, maybe there are some cases where it will perform much better. But it just doesn't seem as solid to me as Claude still.
It would have eventually finished?