On every first message of any conversation, model is stuck in 5.5
Can we please fix this bug? Its been 5 updates and its the most obvious bug in the whole app…
I have to start conversation with 5.5, stop it, change to 5.6 and tell it “continue” on every single new chat.
Hi and welcome back to the developer community!
Thanks for reporting this.
@OpenAI_Support could you please look into it?
and
Could you maybe tell which browser you are using. I guess when they look into it that could make their life alot easier - because they can just test it on a similar machine like yours.
Such errors don’t neccesarily need to appear in all browsers…
Also a recoding with the developer console opened so it shows the console log (typically you press F12) helps.
No need for you to rerecord. This is also a general tipp for others who read this and do bug reports.
Hi Jochen, thanks for taking this over. It’s on the Codex Desktop App (For Mac). Version 26.715.31925 still occurs
Found out that I had 5.5 as default in my config.toml. Removing model default fixes this.
Problem occurs when you set a default model. Then you are forced to stick with it for the first message.
For example if you set this in the config.toml:
model = "gpt-5.6-sol"
model_reasoning_effort = "high"
You cant change model or reasoning effort in the first message.
If you only set one of them (reasoning effort or model), whichever you set, you can’t change it for that first message.
Thanks for sharing the solution!