56% OF GPT-5.4'S CITATIONS GO TO BRAND WEBSITES. ONLY 8% OF GPT-5.3'S DO

Summary from the TLDR Marketing newsletter

OpenAI's GPT-5.4 model in ChatGPT cites brand websites far more often than its GPT-5.3 model. Brand sites receive 56% of GPT-5.4 citations but only 8% of GPT-5.3 citations. GPT-5.4 sends an average of 8.5 fan-out queries per prompt, while GPT-5.3 sends only 1 query. GPT-5.4 also cites commercial pages far more often. It cited pricing pages 138 times across 50 prompts, while GPT-5.3 cited them only 4 times. The models rarely cite the same sources.