City studies · Chicago, IL · Accountants
Which accountants in Chicago, IL does AI recommend?
We asked ChatGPT, Claude, Gemini and Perplexity 48 buyer questions about accountants in Chicago, IL on October 20, 2026, and their 192 answers named 308 different firms. CliftonLarsonAllen (CLA) was named most often (33 of 991 recommendations), the top five firms took 15.8% of all recommendations, and 252 of the 308 firms (81.8%) were named by only one assistant.
Most-recommended accountants in Chicago
| Firm | Times named | Share of all 991 |
|---|---|---|
| 1. CliftonLarsonAllen (CLA) | 33 | 3.3% |
| 2. Porte Brown LLC | 32 | 3.2% |
| 3. H&R Block / Block Advisors | 31 | 3.1% |
| 4. Pasquesi Partners, LLC | 31 | 3.1% |
| 5. Jackson Hewitt Tax Service | 30 | 3.0% |
Names appear as the assistants wrote them. Two spellings of one brand count as two firms.
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What it means for accounting firms in Chicago
A buyer who asks an assistant for a recommendation gets a short list of names. Across all 192 answers, the five firms above took 157 of the 991 recommendations; the other 303 named firms shared the remaining 834.
The assistants also disagree. 252 of the 308 firms were named by just one of them, so a firm that comes up in ChatGPT can be missing from Claude or Gemini. Checking one assistant tells you little about the rest.
How we tested
On October 20, 2026 we put the same 48 questions to ChatGPT, Claude, Gemini and Perplexity, worded the way buyers ask, from “best accountants in Chicago” to questions comparing firms. We stored all 192 answers word for word and counted every firm each one named. One run is a snapshot; answers shift between sessions, which is why we re-check weekly for clients. Full details are on our methodology page.
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Accountants in Chicago: common questions
Which accountants in Chicago, IL does AI recommend most often?
In our run on October 20, 2026, the most-named were CliftonLarsonAllen (CLA) (33 times), Porte Brown LLC (32) and H&R Block / Block Advisors (31), out of 991 recommendations across 192 answers.
How many accountants in Chicago do AI assistants name?
308 different firms were named at least once across 192 answers. 252 of them were named by just one of the 4 assistants.
Do ChatGPT, Claude, Gemini and Perplexity agree on the best accountants in Chicago?
Not often. 81.8% of the firms named were named by only one assistant, so showing up in one tool says little about the others.
How can my firm get recommended by AI in Chicago?
Start by finding out which questions name you today and which name your competitors. Our free report runs the same questions for your firm and lists what to fix first.
Accountants in other cities
Source: AI Mention Score run of October 20, 2026 (192 stored answers, 991 recommendations).