ChatGPT’s Default & Premium Models Search The Web Differently
Ask ChatGPT’s default and premium models the same question, and they’ll cite almost entirely different sources, according to a Writesonic analysis. GPT-5.4 Thinking, ChatGPT’s premium model, sent 56% of its citations to brand websites. GPT-5.3 Instant, the default for all logged-in ChatGPT users, sent 8%. Across all prompts, the two models shared only 7% of …