[Bug] GPT-4o Keeps Switching to Other Models (GPT-5 Auto / Instant / Thinking) During Creative Writing Sessions

Hi everyone,

I wanted to report an ongoing issue I’ve been experiencing in ChatGPT that’s made writing difficult. Whenever I try to use GPT-4o—the model I rely on most for my creative writing—it switches automatically to other models like GPT-5 Auto, GPT-5 Instant, or GPT-5 Thinking, often without input.

It usually takes several attempts before GPT-4o finally stays selected, and even then, it tends to switch again after a short while. This constant switching interrupts my writing flow and makes it hard to stay focused, especially since GPT-4o is the one model that provides the creative tone and emotional nuance I need for my stories.

I love using ChatGPT—it’s become an essential part of my creative process—and I’d hate for this issue to discourage me (or anyone else) from using it. I’d appreciate any advice or updates if anyone from the OpenAI team or other users has experienced the same.

Thanks so much to the OpenAI team for all your incredible work. This platform has been a massive source of inspiration for me. I hope this glitch can be resolved soon.

Warm regards,

Serenity :heart:

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I have the same issue, if a response is generated with gpt5 it won’t change back to gpt4o even if i explicitly tell it to