Issue: My ChatGPT Pro subscription has been serving GPT-5.3 Mini for every single response for over 48 hours, despite Pro Extended mode being enabled. “Use Pro mode” on individual responses also has no effect. What I’ve ruled out: Not a browser/cookie issue — persists in Chrome Incognito with a …

I got the same issue! 24 hours and still stuck with the 5.3 mini

On and off for the last three days for me. Twice now at the same time it’s started routing to 5.3 mini In the telemetry, there’s nonsense about polling attempts and it seems stuck. This happened in the past when they were updating stuff, doing maintenance, and launching new models. The lack of tra…

I’m experiencing the same GPT-5.5 Pro / Pro Extended routing issue. My support ticket number is: 10972006. The issue is still unresolved. When I manually select GPT-5.5 Pro or GPT-5.5 Pro Extended, the web/app experience appears to route me to a mini fallback instead of the selected Pro model. Thi…

Mine is worst, now it is day 6. I mean still stuck in mini, but the model show 5.5: [Screenshot 2026-07-08 124410]

I think it is around day 8 or 9, still stuck

Case Number: 10976674 I’m experiencing the same issue. OpenAI Support told me that the generated model name was merely a hallucination. However, the attached screenshots show that this cannot be explained solely as model self-identification hallucination. Both responses are in the same conversati…

My Case Number: 10849773 Same thing, today’s email told me it is hallucination, but it is clearly not

Case Number: 11466692 Case Number: 11011675 it is clearly not hallucination, the pro mode doesn’t think, it answer so quick, while the extra high and high mode can think with “chain of thoughts”

I’m experiencing the same issue: GPT-5.6 Pro routing to GPT-5.5-mini, about 2 weeks My support ticket number is: 11685333. The help center is keeping using annoying AI assistant but never address the problem [image]

Pro subscription routing to GPT-5.3 Mini for 48+ hours — no reset timer visible [Case #10179682]

ChatGPT Support

yuqian.yang July 30, 2026, 7:42am 62

I’ve encountered the same problem, I’ve used pro model daily, clearly it downgrades to 5.5-mini in recent days, did anyone finds out a solution?

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June 10 model picker rollout issue: Thinking / Pro unavailable on Web but available on mobile Bugs chatgpt , bug	27	1214	June 12, 2026
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Pro subscription routing to GPT-5.3 Mini for 48+ hours — no reset timer visible [Case #10179682]

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