Raw LLM Responses

GPT-5 is a new model family, but ChatGPT now uses dynamic routing. Routing has occurred since 3.5. GPT-5 might actually hand your query to a smaller or faster variant unless you explicitly choose otherwise. The problem is OpenAI’s rolling out GPT-5 as the default and removing manual model selection for many users, so you can’t just pick GPT-4.5 or o3-Pro in the UI anymore. If you want to guarantee the smartest/heaviest model, you currently need to use the API and specify the exact model name (e.g. o3-pro), because prompts asking for it in the chat aren’t guaranteed to override routing. I'll bet money after all this online backlash and complaining, they'll probably reintroduce selection of models here sometime soon.