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GPT-5.5 Instant vs GPT-5.3 Instant: Brand Citations Drop 55%, Reddit Becomes ChatGPT’s Top Source
ChatGPT replaced GPT-5.3 with GPT-5.5 as its free-tier default in early May. The data shows brand citations halved, Reddit became the most-cited domain by a 3x margin, and 16% of prompts now silently reroute to the Thinking tier without telling the user.
Fan-out query tracking is live in the Writesonic Chrome extension
See every sub-query ChatGPT, Claude, Gemini, and Perplexity run before they answer, alongside Google keyword data, in the Writesonic Chrome extension.
GPT-5.5 Cites Brand Sites 47% of the Time. GPT-5.4 Did 57%. The Citation Data No One’s Talking About.
GPT-5.5 cites brand websites 47% of the time, down from GPT-5.4’s 57%. The mechanism: site: operator usage collapsed from 40.5% of searches to 12.6%. Here’s what changed for AEO.
ChatGPT ads tracking is live in Writesonic
Track ChatGPT and Google AI Overviews ads alongside your organic AI visibility. See which prompts trigger sponsored placements, which brands dominate, and how the AI ad landscape is shifting in real time.