AEO & SEO Case Study: Paul Industries, Named in ChatGPT and Perplexity and Cited 3,800 Times in Microsoft Copilot

Updated September 2026 · Written and maintained by the Progression Agency strategy team

“After Progression Agency built my website and handled the AEO and SEO work, I started attracting many multi-million-dollar and some multi-billion-dollar a year company leads every week that found me online. Before that, all of my business came through referrals.”

Gil, Paul Industries

This is an AEO case study and a B2B SEO case study in one. Progression Agency built the website for Paul Industries and does its AEO and SEO work, and AI assistants including ChatGPT, Perplexity and Microsoft Copilot, among others, now name and cite Paul when buyers ask who can do the work. Between 2 August and 27 September 2026, Microsoft’s Bing Webmaster Tools recorded 3,800 citations of paulindustriesllc.org in Copilot and Bing’s AI answers, rising from roughly 10 a day in early August to 150-230 a day in the week of 21-24 September. ChatGPT names Paul in its answers to 8 of the 10 supplier-selection questions tracked for it, and the client reports that enquiries include multimillion-dollar-a-year company leads, arriving every month.

The result in Microsoft Copilot

Bing Webmaster Tools added an AI Performance report on 10 February 2026, in public preview. It counts how often a site’s pages are displayed as sources in AI-generated answers, including Microsoft Copilot and AI-generated summaries in Bing (Microsoft’s announcement). The count comes from Microsoft itself rather than from a third-party estimate. For paulindustriesllc.org, the report pulled on 27 September 2026 shows the following.

What Microsoft counts as a citation

Microsoft describes a citation as a reference that displays a site’s content as a source in an AI-generated answer. Each time Copilot or an AI summary in Bing shows a Paul Industries page as one of its sources, the count rises by one, and the reader sees the page as a source for the answer in front of them.

What a grounding query is

In Microsoft’s words, grounding queries are the key phrases the AI used when retrieving content that was referenced in its answers: the search the assistant runs to find material for its answer, which can differ from what the person typed.

ChatGPT, Perplexity and other AI assistants name Paul too

Bing’s report covers Microsoft’s side only. Buyers ask other assistants the same questions, and Paul shows up there as well.

ChatGPT

ChatGPT names Paul Industries in its answers to 8 of the 10 supplier-selection questions tracked for the company, according to an AI search visibility report for the 30 days to 30 September 2026. None of those mentions is negative.

Perplexity

In our September 2026 checks, Perplexity named Paul Industries in answers to supplier-selection questions and linked to its website as a source.

Visits from AI assistants

Paul’s analytics record visitors arriving from ChatGPT, Perplexity and Copilot, and ChatGPT sends the most of the three. For Paul’s buyers, finding a supplier online now includes asking these assistants.

What the client says

The outcome for the business is Gil’s to describe, so it is given in his words.

“After Progression Agency built my website and handled the AEO and SEO work, I started attracting many multi-million-dollar and some multi-billion-dollar a year company leads every week that found me online. Before that, all of my business came through referrals.”

Gil, Paul Industries

Gil also confirmed three points for this case study:

• Enquiries include multimillion-dollar-a-year company leads, arriving every month.
• They arrive as both phone calls and website form submissions.
• The change followed roughly two weeks after the main build work.

Who has been getting in touch

Enquiries include multimillion-dollar-a-year company leads, arriving every month: among them a venture-backed biotech in Massachusetts, a pharmaceutical manufacturer, an industrial chemical company, and companies in Maryland, elsewhere on the East Coast and in Illinois, as well as in Denmark and Switzerland, among others. They come from biotech, pharmaceutical, food and beverage, nutraceutical and cosmetic manufacturing, and they are project enquiries rather than brochure requests: new builds and retrofits. The companies are not named here; who they are is theirs to share.

When the leads started

Gil reports that multimillion-dollar-a-year company leads started coming in about two weeks after the main build work, and have arrived every month since. Over the same weeks, Bing’s count of Copilot citations climbed from roughly 10 a day in early August to 150-230 a day in the week of 21-24 September 2026.

Share of the answer on commercial questions

For each question, Bing also reports how the citations were split between sites. Above 50%, a site is cited more often than every other source combined.

These are commercial questions: who supplies it, who provides it, what it costs, asked when a buyer has a real project. On the first, Paul draws more citations than every other source combined.

About Paul Industries

Paul Industries (paulindustriesllc.org) provides process equipment, sanitary process piping and high-purity water systems for pharmaceutical, biotech, food and beverage, nutraceutical and cosmetic manufacturers worldwide: USP purified water and water-for-injection systems, clean steam, CIP and SIP systems, cleanrooms, process tanks and skids, sanitary process piping with orbital welding and passivation, and validation and commissioning, from design through installation and maintenance. Progression Agency built Paul’s website and does the AEO and SEO work for it.

An AEO case study, a B2B SEO case study, or both?

Both. The engagement covers answer engine optimization and SEO together (“the AEO and SEO work,” in Gil’s words). The measured results here are AI citations and AI visibility, which makes this an answer engine optimization case study and an AI search visibility case study first. It is also a B2B SEO case study, for a company that sells to manufacturers.

Readers looking for an LLM SEO case study or a generative engine optimization case study will find the same subject under another name: ChatGPT, Perplexity and Copilot all run on large language models, and the discipline has several labels. AEO vs GEO vs LLM SEO explains the terms.

Related services and guides

• Answer engine optimization agency: the AEO program behind this result.
• AEO services: what an AEO engagement includes, by industry.
• AI visibility audit: where your own company stands in AI answers today.
• LLM visibility: how visibility in AI answers is measured.
• AEO vs SEO: the two disciplines side by side.
• Industrial SEO: search and AI visibility for companies that sell into plants.
• Manufacturing and industrial marketing agency: the wider program for manufacturers.
• Life sciences marketing agency: for suppliers to pharma, biotech and device makers.
• All case studies: other published work.

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