You mean - in the left sidebar?

Thank you for your reply.

No, I meant directly on the chat.com website. ChatGPT recently introduced a new model — GPT-5 — but when I access the site using Firefox, I only see GPT-4o or older versions available. GPT-5 does not appear as an option at all.

However, when I access the site using a different browser like Chrome or Edge, GPT-5 shows up normally. So I’m wondering if this might be a compatibility issue specifically with Firefox.

Any further advice or suggestions would be greatly appreciated. Thanks again!

Try to use the sidebar. Today it's been advertising Chat GPT-5 to me, so I guess it's default and compatible option.

I’ve checked the left sidebar as well, but GPT-5 still doesn’t show up there either. It only displays GPT-4o and the previous versions.

So it seems like GPT-5 is not available at all when I use Firefox, even though it appears just fine on other browsers. Any idea what might be causing this?

Hi,

Do you still experience the issue? There was a kind of progressive rollout, but now the model should be accessible for everyone.