← Publishing & Newsletters ranking
Brand report · September 2026
Substack: AI Visibility Report
When buyers ask ChatGPT, Claude, and Gemini about publishing & newsletters, Substack ranks #1 of 15, a Visibility Score of 63 in Publishing & Newsletters .
These rankings are measured from what the three models know from training, not a live web search. The live-web grounded surface is rolling out across the index. Methodology.
Substack owns the publishing category outright.
Where it wins. AI models name Substack first in Publishing and Newsletters 39% of the time, and the overall mention rate of 68% means it surfaces in more than two out of three relevant buyer conversations. That combination of reach and pole position is rare at this rank.
Where it loses. Enterprise buyers get no signal from Substack in AI recommendations, and Beehiiv and Ghost stay close enough in co-mention patterns to chip away at any perception of a category monopoly.
AI-generated analysis of the September 2026 measurements.
Substack claims Publishing & Newsletters and the models back it: #2 of 15 there.
Homepage self-messaging · September 2026 ranking · the biggest gaps across the index →
ChatGPT 
Claude 
Gemini Being named is not the same as being recommended. Each mention is graded endorsed (a strong pick), listed (a neutral option), or caveated (named with a reservation).
Share of each theme's answers that mention Substack. Hover a row for the exact prompt. Compare shapes on the head-to-head page.
Gaps Enterprise pick
Share of Substack's mentions where the AI models name this brand in the same answer. That is the real competitive set in the AI channel.
Head-to-head: Substack vs Ghost · Substack vs Beehiiv
Scores are measured from real AI answers, refreshed monthly. Methodology.
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