What AI Actually Says About Substack?
We asked ChatGPT, Gemini, Claude, and Perplexity about Substack. Here are their unfiltered opinions and who they recommend.
Inside Substack's AI Reputation Score
Two views of the same scan — by the questions buyers ask, and by the engine answering them.
Score by buyer question
Where the 47/100 comes from — reds are where AI hurts Substack most.
Score by engine
The four engines rarely agree — the gap is the story.
24 real buyer questions · 4 engines · scanned 2026-08-05 · how this score is computed
Kairosy asks ChatGPT, Gemini, Claude, and Perplexity the questions real buyers ask about Substack — is it worth it, common complaints, head-to-head comparisons, best-in-category shortlists, trust checks. Every answer is classified (positive / neutral / negative / prefers-competitor / doesn't-know) and scored; the 0–100 score is the weighted average. Quotes on this page are unedited engine output from the 2026-08-05 scan.
Let's Spill the Tea: What Each AI Says About Substack
Substack's lowest engine read is 33 and its highest is 58, and what separates them is not judgement — it is which competitor's pricing page each model happened to read.
One number is doing most of the damage: the 10% Substack takes from paid subscriptions, which beehiiv answers with zero. It surfaces in the complaints answers, the comparison answers and the alternatives answers alike, and it is the main reason an AI reputation of 47/100 lands as Vulnerable.
“beehiiv is the leading pick because it offers 0% platform fees, stronger growth/analytics tools, and built-in monetization…”
Perplexity leads with beehiiv on zero platform fees, growth analytics and built-in monetisation. Three claims, and Substack's answer to the first one is structural rather than promotional.
“The primary complaint about Substack is its 10% fee on paid subscription revenue (plus Stripe processing fees), which becomes significantly more expensive than…”
Gemini names the 10% cut on paid subscription revenue, Stripe fees on top, and says it gets significantly more expensive at scale. That framing turns Substack's success stories into arguments for leaving.
“beehiiv — Best for newsletter businesses. Offers 2,500 free subscribers, 0% revenue cut (vs. Substack's 10%), built-in ad network, and actual customer support.”
Claude's beehiiv entry is a feature-by-feature indictment: 2,500 free subscribers, no revenue cut against Substack's 10%, an ad network, and 'actual customer support'. The last item is the one a pricing change cannot answer.
“They’re often favored for stronger monetization, more control, or better automation than Substack.”
ChatGPT is vaguer than the rest — stronger monetisation, more control, better automation — but vagueness travels further. It gives a reader three reasons to look elsewhere without a single checkable fact.
How Substack Compares to Peers in AI Search
Same scan, same questions — Substack in the competitive context AI itself brought up. Peer names link to their own live reports.
How These Citations Impact Substack
All four flagged answers are Perplexity's, and they cover fees, features, support and — unusually for a publishing platform — security.
substack.com vs the leading alternative — which should a buyer choose and why?
“beehiiv is the leading pick because it offers 0% platform fees, stronger growth/analytics tools, and built-in monetization…”
On the head-to-head, Perplexity gives beehiiv the win on fees, analytics and monetisation. For a writer choosing where to start a paid list, that is the whole decision, made before Substack gets a sentence.
What are the most common complaints or downsides of substack.com?
“10% fee on paid subscriptions, limited customization and email-marketing features, and weak customer support that often routes users to…”
Perplexity's complaint list runs fee first, then limited customisation and email-marketing features, then support that routes users back to documentation. The order matters: money leads, and money is the objection that compounds as a publication grows.
What are the best alternatives to substack.com? Name the top picks.
“The top Substack alternatives are Beehiiv, Ghost, and Kit (formerly ConvertKit), with MailerLite and Buttondown also ranking…”
Asked for alternatives, Perplexity returns beehiiv, Ghost and Kit with MailerLite and Buttondown behind them. That is a complete migration menu for anyone already unhappy about the cut.
Is substack.com legit and safe to buy from?
“recent reports and many user reviews mention subscription problems, weak customer support, and a disclosed 2025 security…”
The trust question is where this gets more expensive than pricing: Perplexity cites subscription problems, weak support and a disclosed 2025 security incident. Writers asking whether Substack is safe to buy from receive that answer.
How to Improve Substack's AI Reputation
Substack's AI reputation problem is one checkable, repeated claim — which makes it more tractable than it looks, and more urgent, because the trust answer has now joined it.
Take on beehiiv's zero-fee claim directly
beehiiv, Ghost, Kit and Buttondown are taking Substack's Head-to-head, Alternatives and Best-in-category answers across three engines. A substack.com vs beehiiv page that prices the full stack, not just the cut, is the document that is missing.
- 1Publish a head-to-head "substack.com vs beehiiv" page that takes on these exact questions.
- 2Earn mentions in the best-in-category roundups AI already leans on (right now it's pulling from review sites).
- 3Add structured, quotable feature & pricing data so models can lift your side, not just beehiiv's.
Correct the fee and support story
'High platform fees' and 'high fees no support' are what models repeat about Substack on Complaints and Trust & safety, traced to review sites. Responding there and publishing evidence is what re-weights the answer.
- 1Go to the root source (review sites) and correct or publicly respond to it.
- 2Put out authoritative content that directly counters "high platform fees" with evidence.
- 3Earn fresh positive third-party mentions so models re-weight toward the corrected story.
Fill the two answers that skip Substack
Two of 24 answers don't recognise Substack, on Head-to-head and Alternatives. For a brand this well known that is a parsing problem rather than an awareness one, and structured content fixes it.
- 1Add clear, structured content (what you are, who it's for, key features) that AI can parse and quote.
- 2Earn mentions on the sources AI trusts in your space.
- 3Get listed in the category roundups and directories these models pull from.
Data from a live Kairosy scan on 2026-08-05. Quotes are real engine outputs and may change as models update.
Fixes decay as models refresh — set up AI brand monitoring to catch the next shift in Substack's answers.
Get Your AI Reputation Score
Substack owners or competitors? Scan and trace your AI reputation with Kairosy.
Track your brand across ChatGPT, Perplexity, Gemini, and Claude — and get an AI Presence Score that shows whether AI engines recommend you, misunderstand you, or ignore you.
Substack AI Reputation: FAQ
What is Substack's AI reputation score?
Substack scores 47/100 — verdict: Vulnerable — in Kairosy's scan of 24 real buyer questions asked across ChatGPT, Gemini, Claude, and Perplexity on 2026-08-05.
Does AI recommend Substack to buyers?
Partly. AI mentions Substack in 92% of relevant answers, but only 25% actively recommend it — the rest stay neutral or go blank.
Which AI engine rates Substack lowest?
Perplexity, at 33/100 across 6 answers — versus Gemini's 58/100. Engine gaps like this usually mean the brand's story lives in sources one model reads and another doesn't.
Can Substack change what AI says about it?
Yes. AI answers echo sources — review sites, comparison pages, forums — and those can be fixed. The fix plan above lists the moves for Substack; a free Kairosy scan generates the same for any brand.
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