It is not available on my (free) account in either the app or the website. So no, everyone does not have access to it.

It's for paid users for now, not free. I have ChatGPT Pro and I can use the new model.

I am a free user and I have 4o. I think it is just a gradual roll out.

That sounds about right, it just seemed that everyone who replied above who had access to the new model were paid users.

How do I get access? I just checked my app and the Premium upgrade says it will unlocked GPT-3.5 and GPT-4, so I assume my version is still the old one.

All my apps are updated in the App Store too.

To add a counterbalance, I just checked in the app and on the website on a non-paid account, and I too do NOT have GPT-4o.

Everyone who says they have access in the replies to my comment seem to be paid users. So maybe it's only rolling out to them first.

I expect they have to offer the paid users some thing

Paid users get like a 5x higher rate limit iirc

I just checked, there was an iOS app update available and it enabled it. I'd check again if there's a new update (version 1.2024.129). Or you could use the website.

I'm on the same version and don't see anything different

Website also only has toggle for 3.5 and 4 with the Plus upgrade. Not sure if it's cause I'm in Canada?

I use their website and it's one of the three models to choose from if your are on plus subscription.

I have premium access and I can select 4o in the dropdown menu on Android

In the App Store there's a new build of the iOS app as of 3 hours about (call it about 11am US Pacific time). It includes the GPT-4o model (at least it shows it for me.)

Are you a paid user?

Yes

I have the 4o model. On premium. No voice yet

I have a paid account, and I didn't have to do anything to use the new model.

I have a paid account and can do voice to voice on the iOS app as of last night.

The realtime one they showed yesterday or the one that's existed forever where it's just a voice-to-text input and TTS output taking turns?

I feel silly now. I downloaded the app after the announcement (I'm a desktop user) and it looked identical to the one they show in the sarcasm video. When I asked it, I was told it was not the new feature announced yesterday. Still a lot of fun!

Edit - it does list the new model in my app at least

My (paid) app has it but no voice chat yet

API yes, ChatGPT no (at least not for all users); I've got my own web interface for the API so I can play with the model (for all of $0.045 of API fees), but most people can't be bothered with that and will only get 4o when it rolls out as far as their specific ChatGPT account.

I have a regular ChatGPT Pro account and I have GPT-4o.

The bigger issue is that 4o without the multi-modal, new speech capabilities or desktop app isn't that different to GPT-4. And those things aren't yet launched.

Was running just fine on my ChatGPT client on iOS - full 2-way voice comms by 3:00 PM yesterday. Application was already updated.

I don't have access to gpt-4o via ChatGPT

Posted further down the thread - I have a paid account and can do voice to voice on the iOS app as of last night.