Named by 3 of 4 assistants
Best Sales Tax Compliance according to AI
How ChatGPT, Gemini, Claude and Perplexity rank sales tax compliance software in the Edition 4 snapshot for Week 31, August 2, 2026: 15 products named across 4 core questions, backed by 97 cited pages from 50 domains.
| Rank | The canonical software product Cooper identified in the assistants’ answers. | A 1–100 score for how strongly tracked AI assistants recommend the product in this category and question scope. Higher is better. | The product’s position within ChatGPT’s answers for the selected buyer-question view. Lower numbers are better. | The product’s position within Gemini’s answers for the selected buyer-question view. Lower numbers are better. | The product’s position within Claude’s answers for the selected buyer-question view. Lower numbers are better. | The product’s position within Perplexity’s answers for the selected buyer-question view. Lower numbers are better. | Distinct publisher domains behind the verified cited pages for this product, across every buyer question this week. | Distinct cited pages Cooper verified as naming or representing the product, across every buyer question this week. | The change in ranking position since the previous weekly snapshot. New means there was no prior position. |
|---|---|---|---|---|---|---|---|---|---|
| 59 | 4 | 1 | 1 | 1 | 11 | 17 | Up 2 positions | ||
| 55 | 1 | - | - | - | 2 | 5 | New This Week | ||
| 33 | 3 | 6 | 2 | 2 | 21 | 42 | Up 1 position | ||
| 4 | 28 | 2 | - | - | - | 2 | 2 | Up 10 positions | |
| 5 | 22 | 6 | 2 | - | - | 12 | 25 | Up 2 positions | |
| 6 | 12 | - | 4 | 3 | 5 | 9 | 10 | Down 1 position | |
| 7 | 11 | 5 | - | - | - | 12 | 26 | New This Week | |
| 8 | 8 | - | 3 | - | - | · | · | New This Week | |
| 9 | 8 | 7 | - | - | - | 3 | 6 | Down 3 positions | |
| 10 | 6 | - | 7 | 7 | - | 3 | 6 | Up 1 position | |
| 11 | 6 | - | 8 | 6 | - | · | · | New This Week | |
| 12 | 5 | - | 5 | - | - | 9 | 15 | New This Week | |
| 13 | 4 | - | - | 4 | - | 1 | 1 | Down 3 positions | |
| 14 | 3 | - | - | 5 | - | · | · | Up 1 position | |
| 15 | 2 | - | - | 8 | - | 1 | 2 | New This Week | |
| 16 | 2 | - | - | - | 3 | 9 | 22 | Down 14 positions | |
| 17 | 1 | - | - | - | 4 | 4 | 6 | New This Week | |
| 18 | 1 | - | - | - | 6 | 25 | 49 | New This Week |
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This Edition’s News
Reporting from Cooper’s Edition 4 software recommendation index.
Index Update
The Cooper Index, Edition 4: How AI Recommendations Changed Across 80 Software Categories
Edition 4 measures what ChatGPT, Gemini, Claude, and Perplexity recommend across 80 business software categories, separating Best, Most Affordable, Easiest to Set Up, and Rising into four direct rankings.
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Eight category-relative Rising AIQ findings show where emerging-product recommendations strengthened in Cooper’s fourth immutable edition.
Category Report
Edition 4 Finance Software Report
A category-by-category reading of all ten Edition 4 Finance markets, with Best Top 3 tables and separate Most Affordable, Easiest to Set Up, and Rising analysis.