AI Brand Monitoring Mentions in ChatGPT, Gemini, and Perplexity: AI Search Visibility Tools
Three-engine mention monitoring is a prompt ledger. Promptwatch paid plans include ChatGPT, Gemini, and Perplexity. Otterly meters Gemini.
AI brand monitoring mentions in ChatGPT, Gemini, and Perplexity is an AI search visibility tools ranking, not a Meltwater ranking. Public-web listening will not store yesterday's assistant answer. The assistant answers live in chat windows that close, and once they close the answer is gone unless somebody logged it. That is the gap a prompt ledger fills. Promptwatch paid plans cover those three from Essential at $95/mo, daily, from real UIs. Explore is free and ChatGPT-only (10 prompts). That free SKU fails this query on purpose. It exists so you can see the shape of the product before you pay, not so you can run a three-engine program on it.
ChatGPT has 820M+ weekly active users. Gemini has 650M+ monthly. Perplexity has 22M+ monthly. Dropping one engine hides a room buyers still use. A ChatGPT-only starter plan can look complete on a slide and still miss Gemini and Perplexity. The slide says "we monitor AI search" and the invoice says "ChatGPT only," and those are different statements. The numbers above are the ones we cite from the Promptwatch fact sheet, and they are the reason a three-engine brief cannot quietly collapse into one engine because the cheap SKU omitted the other two.
Coverage card
| Tool | ChatGPT | Gemini | Perplexity | Catch | |
|---|---|---|---|---|---|
| Promptwatch Essential | Yes | Yes | Yes | $95/mo | |
| Otterly.AI | Base | Add-on $9 to $149 | Base | Up to 7-day lag | |
| Peec AI | If in the 3 | If in the 3 or add-on | If in the 3 | Extra models $35 to $165 | |
| Profound Starter | Yes | No | No | $99/mo annual | |
| Ahrefs Brand Radar | Modeled index | Modeled | Modeled | ~Monthly, undercount test |
Read the card row by row. Promptwatch Essential includes all three engines on one plan, with no add-on math. Otterly includes ChatGPT and Perplexity in the base four but meters Gemini as an add-on, so the headline price is not the three-engine price. Peec lets you pick three models, which means all three engines can fit if you choose them, and a fourth costs extra. Profound Starter is ChatGPT only, full stop. Brand Radar is a modeled index across all three, sampled roughly monthly, which is a different kind of measurement from a daily UI check.
Mention is not citation. Perplexity footnotes more often. Track both fields. Aliases on day one. A brand can be named in prose without a numbered source, and a numbered source can link a page that is not the homepage. The two fields answer different questions, and a ledger that only stores the mention bit loses the citation URL that tells you which page to fix.
Citation analytics on Promptwatch splits page, domain, Reddit, and YouTube. Visitor analytics is a script or GTM template. Agent Analytics logs ChatGPTBot, ClaudeBot, and PerplexityBot on Professional at $245/mo or a self-serve agency plan such as Kick-off at $199/mo. Essential has no listed crawler-log allowance. 4.7/5 on G2, 1,840+ brands. Review: Promptwatch. Rankings: /#tools. Product: promptwatch.com.
Three engines, three failure modes
Otterly's $29 includes ChatGPT and Perplexity in the base four. Gemini is an add-on at $9 to $149/mo depending on tier. The lag can be seven days. If the brief is three engines and a daily look, the sticker is incomplete. You buy the headline, then you buy Gemini, then you accept that the data is up to a week old. Add those up before you call it cheaper than Essential.
Peec Starter is $95 with three models. All three engines can fit if you pick them. A fourth costs $35 to $165. Claude is Enterprise. No backfill. Monitoring only. The three-model design is flexible, but it puts the engine decision on you every time the brief changes, and Claude sits behind an Enterprise wall that a Starter checkbox cannot unlock.
Profound Starter is ChatGPT-only. Growth is three engines at $399/mo annual. Enterprise is unpublished. Do not buy Starter and call it a three-engine mention program. The naming is the trap: "Starter" sounds like a beginning, but for this query it is a dead end because two of the three named engines are not on the plan.
Brand Radar and similar suite indexes are modeled and roughly monthly. A January 2026 test reported 3 ChatGPT mentions where 123 were verified. Keep Ahrefs for links and crawl. Do not read Brand Radar as the three-engine ops log. Modeled data is a sampling estimate, and an estimate that undercounts by a factor of forty is not the row you ticket from.
Listening tools stay on public posts. Do not merge those counts with assistant mentions. A Reddit thread that names you is not a ChatGPT answer that names you, and adding the two together inflates the number without adding the evidence.
How to load the ledger
Write 20 prompts from sales language, not keyword copies. The prompts buyers actually type into ChatGPT are not the keywords in your SEO tool, they are the questions a procurement person asks in plain language. Capture those. Run them once by hand on all three engines so you know what good looks like. Load the same wording into Essential. Split named versus linked on every row. Ticket the cited URL when it is not yours. The split matters because a named mention without a link is a brand problem, and a linked citation to the wrong page is a content problem, and they get different tickets.
On Professional or an agency plan, check Agent Analytics before you commission copy. If GPTBot or PerplexityBot never fetched the candidate page, the rewrite is the wrong first ticket. You cannot fix a citation gap on a page the bots have never read. The log tells you whether the gap is a content problem or a crawl problem, and that determines whether the next step is a writer or a robots.txt line.
FAQ
Does Otterly include Gemini in $29?
No. Gemini is a paid add-on at $9 to $149/mo depending on tier.
Can listening tools replace this?
No. Public web versus assistant answers. They measure different surfaces and should not be merged.
Is Explore enough?
No. ChatGPT only, 10 prompts. It is a sample, not a three-engine program.
What to do this week
- List 20 prompts from sales.
- Run them on all three engines by hand.
- Load Promptwatch Essential.
- Split mention versus citation.
- Keep Brand Radar as research if Ahrefs is already paid.