Proofsource

Proofsource is an AI intelligence platform that shows whether ChatGPT, Perplexity, Claude and Google AI Overviews name your brand, who they name instead, which sources they cite, and what to fix. Its stated purpose is to make the AI shortlist visible day by day and engine by engine, and then to close the gaps behind every lost answer. The site names four audiences it is built for: growth and brand leaders, writers and search teams, agencies running many brands, and founders and small businesses. Rather than stopping at a visibility score, Proofsource continues through to drafted fixes drawn from your own content, so a gap in an AI answer becomes a change you approve and publish. Buyers now ask AI for a shortlist. An answer engine names three to five brands and moves on, and if your brand is not one of them there is no second page to rank on and no click to measure. Proofsource's own published measurement illustrates how contested that shortlist is: across 947 citations and four engines, 43.5% of the sources AI cited for category questions were comparison pages — listicles, alternatives and versus pages. In the same scan, 387 different websites were cited across just 80 answers, meaning your own site is one voice among hundreds. A separate branded-question read, done by hand, found that only one of four engines described a brand-new company correctly, while the other three answered from what they already believed. The company also published research stating that 0.8% of AI citations point to the brand's own website. These findings explain why Proofsource argues that rank trackers, which measure blue links, do not answer the question of whether an answer engine recommends you. The core visibility layer answers the first question: are you in the answer? For each brand, Proofsource reports mention rate, share of voice and average position per engine, so you can see the share of buyer answers that name you, how large your share of the named brands is, and where you typically appear. Every number carries a 95% confidence range — the site specifies a 95% Wilson interval — so a bad day never looks like a trend. The platform keeps the full text and a screenshot of every answer, which means a visibility claim can be traced back to the actual engine response rather than a summary score. On paid plans the questions are asked every day, because AI answers shift from day to day and a weekly snapshot can miss the day a competitor enters your shortlist. The free trial runs two scans, today and tomorrow, covering 25 questions on every engine for 200 answers in total. Once visibility is measured, Proofsource surfaces who AI names instead of you. Every brand the engines name for your questions lands on a single leaderboard, ranked by answers and broken out per engine, including brands you never thought of as competitors. Any of them can be added to tracking with one click, so the competitive set grows as the engines reveal it, and the leaderboard shows the specific questions where each competitor beats you. The citation layer then explains why: answers are built from sources, so Proofsource lists every page the engines cite for your questions, which cited pages mention you, and which are open to a pitch, a listing or a correction. It flags cited domains and exact pages, listicles that leave you out, and the pages on your own site that engines read versus the ones they skip. In the Tesla example shown on the site, youtube.com was cited in 29 answers, en.wikipedia.org in 24, reddit.com in 20 and tesla.com in 17 — the first naming Tesla outright, the next two naming it partly, and the last being the brand's own site. Proofsource also checks what the engines get wrong about you. Because engines answer from what they already believe, the platform asks about your brand by name, reads the answers, and flags wrong prices, old features and mixed-up identities, with the source behind each claim. An illustrative claim check on the site shows an engine reporting a price the brand retired last year and a free tier that does not exist, tracing it to a 2024 review page, and suggesting an update to the pricing page plus a request for the reviewer to refresh. Profile checks run on the sites engines lean on, and the platform audits crawler access — whether GPTBot, ClaudeBot and PerplexityBot can read you at all. When gaps are found, Proofsource ranks them by likely lift against effort, names the page or source to change, and drafts the fix from your own content for you to approve. The Product Hunt listing describes the final step: agents publish the approved changes, verify that the answers changed, and learn from every change. Proofsource describes one loop from the answer to the fix, summarised as Know, Act, Prove, Repeat. Most AI visibility tools stop at a score; Proofsource continues through what the engines say, why they say it, what to change, and whether the change worked. Onboarding follows a three-step path. First, you tell Proofsource your site; it reads it, works out your category and your competitors, and drafts the buyer questions worth tracking, and you approve every one. Second, the platform asks the engines those questions, keeping every answer with its sources and a screenshot. Third, you get the shortlist and the fixes: where you are named, who is named instead, which sources decided it, and the gaps worth closing first. The site also publishes a methodology page describing how it measures AI answers. For growth and brand leaders, Proofsource offers one number for AI visibility that can be defended in a board meeting, with the questions, engines and confidence range behind it. For writers and search teams, it supplies the questions you lose, the pages the engines cite instead, and drafts grounded in your own site — as the site puts it, search taught you to rank, this shows you how to be quoted. For agencies running many brands, the platform supports unlimited brands on one account, a weekly report per client, and a roll-up of who is winning and losing across the book. For founders and small businesses, the free trial gives 200 answers over two days with no card, so you can see in minutes whether ChatGPT recommends you and then fix the one page that matters most. Because each brand chooses how many questions it tracks, spend can be tied to the brands that earn their place. Concrete workflows follow directly from those roles. A founder can run a free scan before a launch, check whether ChatGPT names the company for its category questions, and start with the single highest-value page to change. A search or content team can look at the citation list, find a listicle that leaves the brand out, and pitch a listing or a correction on that cited page. A brand can run accuracy checks, discover that an engine is quoting a retired price from an old review, and draft a fix plus a reviewer refresh request. An agency can scan each client brand, send a weekly report per client, and roll up the results to see which brands are winning across its whole book. A growth lead can bring a mention rate with a confidence range, backed by the questions and engines behind it, into a board discussion about AI visibility. Proofsource tracks ChatGPT, Perplexity, Claude and Google AI Overviews on every plan, with Grok and DeepSeek available as add-ons on Custom plans. The site's logo strips also display Google AI Mode, Gemini, Microsoft Copilot and Meta AI. The free trial is described as 200 answers, 25 prompts per question, top AI engines, two days, free, and no card, with two scans — today and tomorrow. After that, custom plans start at $64 per brand per month, with the final price discussed on a demo call, and each brand chooses how many questions it tracks. The site also publishes side-by-side comparison pages against Profound, Otterly.AI, Peec AI, Semrush, Ahrefs, Scrunch, SE Ranking, Rankscale and AthenaHQ, covering engines covered, sampling cadence, statistics, fixes and price, with sources for every claim about another product. The shortlist for your category is being written right now by answer engines, and most brands never see it. Proofsource's value proposition is that it makes that shortlist visible — who is named, who is named instead, which sources decided it — and then keeps going with ranked gaps, drafted fixes drawn from your own content, and verification that the answers actually changed. Start free with 200 answers, 25 questions on every engine, and no card, and find out whether AI names your brand.