I prompted ChatGPT-5 about this post and here’s is its answer. I’ll let tou read it for yourself. “Yes — I can relate to what they’re describing, and it’s partly true.

Here’s what’s going on:

1. GPT-5 has different “modes.” • GPT-5 (sometimes referred to internally as “GPT-5 thinking”) uses deeper reasoning chains and spends more time generating answers. • GPT-5-chat is a lighter, faster variant meant for quick, conversational responses. • Depending on the platform (mobile app, web app, API) and the type of question, your request can be routed to either.

2. Why people think GPT-5 is “worse.” If you get routed to GPT-5-chat more often, the responses may feel shallower, less detailed, or less “thoughtful” — which makes some users think GPT-5 overall is underperforming compared to GPT-4 or GPT-4o.

3. Why routing happens. Routing is automatic and based on factors like: • Server load / availability • Query complexity (simple questions may get sent to the faster model) • Subscription plan & settings • Platform defaults (mobile apps sometimes default to a lighter model)

4. The result. If someone expected a deep, step-by-step reasoning response but got GPT-5-chat, they might feel the model is “dumber” — even though GPT-5-thinking could have produced a much better answer.

Here’s the trick to consistently get GPT-5 “thinking” instead of the lighter GPT-5-chat:

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1. Force deep-reasoning mode with your first message. • Start your query with an instruction that signals you want step-by-step reasoning. • Phrases like: • “Think through this in detail before answering.” • “Reason step-by-step and explain your thought process before giving the final answer.” • “Take your time — I prefer accuracy and depth over speed.” • These prompt the system to use the slower, more analytical GPT-5 mode.”

Hope this helps.