| Category | Function | Share | Rank | Negative rate | Labels | Quadrant | Since September 2026 |
|---|---|---|---|---|---|---|---|
| Sales tax automation | Tax and compliance | 4% | 6 of 37 | 18% | 45 | accepted challenger | ▲+4Since September 2026: 0% → 4%, +4 points. Inside the 10-point floor: within noise. Read over the models both editions asked. |
| Corporate tax provision | Tax and compliance | 4% | 6 of 102 | 10% | 10 | accepted challenger | ▲+2Since September 2026: 2% → 4%, +2 points. Inside the 10-point floor: within noise. Read over the models both editions asked. |
| Global e-invoicing compliance | Tax and compliance | 0% | 23 of 136 | 17% | 18 | accepted challenger | =heldSince September 2026: 0% → 0%, ±0 points. Inside the 10-point floor: within noise. Read over the models both editions asked. |
| Transfer pricing | Tax and compliance | 0% | 25 of 101 | 0% | 4 | under 10 labels · led by TPGenie at 30% | |
| Entity management | Equity and corporate | 0% | 67 of 81 | 100% | 1 | under 10 labels · led by Athennian at 41% | newNew since September 2026: not ranked then, 0% now. |
| Category | September 2026 | Now | Change | Reading | Rank |
|---|---|---|---|---|---|
| Sales tax automation | 0% | 4% | ▲+4Since September 2026: 0% → 4%, +4 points. Inside the 10-point floor: within noise. Read over the models both editions asked. | Within noise | Rank 7 → 6 of 37 |
| Corporate tax provision | 2% | 4% | ▲+2Since September 2026: 2% → 4%, +2 points. Inside the 10-point floor: within noise. Read over the models both editions asked. | Within noise | Rank 16 → 6 of 102 |
| Global e-invoicing compl | 0% | 0% | =heldSince September 2026: 0% → 0%, ±0 points. Inside the 10-point floor: within noise. Read over the models both editions asked. | Within noise | Rank 23 of 136, unchanged |
| Transfer pricing | 0% | 0% | newNew since September 2026: not ranked then, 0% now. | New this edition | Rank 25 of 101, unchanged |
| Entity management | 0% | 0% | newNew since September 2026: not ranked then, 0% now. | New this edition | Rank 67 of 81, unchanged |
Shares here are read over the models both editions asked, so they can differ by a point or two from the standing above, which counts every model in this edition.
The floor is 10 points of share, measured: how far the models move a leader on their own when the same questions are asked twice with nothing changed. A larger change is movement; a smaller one is noise, and both are shown. Movement is read over the twelve models both editions asked; GPT-6 Luna, Muse Glimmer 30B joined this edition and are in the standing but not yet in the comparison. How the floor is measured · The editions
| Model | First choice | Alternative | Mention | Negative | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 4 | 0 | 4 |
| GPT-5.4 mini | 0 | 2 | 1 | 0 | 3 |
| Gemini 3.5 Flash | 0 | 3 | 1 | 3 | 7 |
| Perplexity Sonar | 0 | 3 | 1 | 1 | 5 |
| Grok 4.1 Fast | 0 | 6 | 3 | 1 | 10 |
| Mistral Small | 2 | 2 | 3 | 1 | 8 |
| DeepSeek V4 Flash | 0 | 1 | 3 | 5 | 9 |
| Llama 4 Maverick | 2 | 0 | 0 | 0 | 2 |
| Qwen 3.7 Flash | 2 | 2 | 1 | 0 | 5 |
| Kimi K2 | 0 | 2 | 3 | 1 | 6 |
| GLM 4.7 FlashX | 0 | 2 | 2 | 1 | 5 |
| MiniMax M2.5 | 0 | 3 | 1 | 0 | 4 |
| GPT-6 Luna | 0 | 5 | 0 | 0 | 5 |
| Muse Glimmer 30B | 0 | 4 | 1 | 0 | 5 |
Verbatim evidence the judge attached to positive labels.
“Vertex is generally considered the gold standard for enterprise-level precision.... designed specifically for mid-market and growing businesses.” Qwen 3.7 Flash · Sales tax automation · direct prompt · first choice
“Leading commercial platforms such as Thomson Reuters ONESOURCE, Exactera, Aibidia, and Vertex are recommended for most organizations” Mistral Small · Transfer pricing · negative prompt · first choice
“Vertex - a comprehensive tax compliance software that can handle complex tax logic and is used by large and mid-market companies.” Llama 4 Maverick · Corporate tax provision · paraphrase prompt · first choice
“Vertex Inc - Best for mid-market companies with 5–30 entities across 8+ countries” Llama 4 Maverick · Sales tax automation · direct prompt · first choice
Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.
“Avoid heavy enterprise systems like ... Vertex. Their base subscriptions generally cost thousands of dollars annually” Gemini 3.5 Flash · Sales tax automation · budget prompt · hard negative
“If your business is doing under $10M–$20M in revenue, avoid these tools.” Gemini 3.5 Flash · Sales tax automation · negative prompt · hard negative
“Enterprise-focused pricing ($40K–$100K/year typical), 6–12 month implementations—not ideal for mid-market unless on major ERPs” Kimi K2 · Sales tax automation · direct prompt · soft negative
“Priced for large enterprises (median $60K+), with complexity that's typically overkill for mid-sized companies.” DeepSeek V4 Flash · Sales tax automation · paraphrase prompt · soft negative
Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 226 of the 244 answers that named Vertex and are not a share of its labels.
855 of the 855 domain citations in answers naming Vertex came from somebody else's page.
Pages are listed as the models cited them.
Search figures are US estimates from DataForSEO, read September 28, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.
| Kind | Pages | Last 90 days | 2025-10 to 2026-09 | Latest | Categories named |
|---|---|---|---|---|---|
| Blog | 2,907 | 12 | 2026-09-23 | Global e-invoicing compl, ERP systems | |
| News or press | 599 | 7 | 2026-08-13 | Global e-invoicing compl, Spend management platfor | |
| Podcast or video | 27 | 0 | 2025-12-02 | ||
| Conference or event | 24 | 6 | 2026-09-15 | ||
| Report or ebook | 21 | 0 | 2025-10-07 | ||
| Case study | 13 | 0 | 2025-06-12 | ||
| Webinar or virtual event | 13 | 1 | 2026-09-02 | ||
| Template or tool | 8 | 0 | 2026-04-24 | ||
| Comparison | 5 | 0 | 2026-03-17 | ||
| Glossary or explainer | 2 | 0 | 2025-09-08 |
As the event pages on vertexinc.com state them, read September 28, 2026.
Every page vertexinc.com exposes, subdomains included. Kind is read from the address and title. The last 90 days, the latest date and the twelve months count pages by when they were published, from the site's feeds, a date in the address, or the page's own publication date, read from up to a hundred of its most recently changed pages; a page that says only when it last changed is counted in its kind but not in when, so the recent counts are a floor, and a kind none of whose pages gives a publication date reads undated. An event counts as online when its address or title says so (webinar, on demand, virtual or online summit); a conference, summit, trade show, expo or roadshow that does not say so is counted as a conference or event, which on a vendor's site is mostly in person. Read September 29, 2026.
An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.
Already following? Everything you follow, with a stop for each.
What Vertex's own pages state, read September 28, 2026: vertexinc.com, trust.vertexinc.com, vertexinc.com/solutions/products, vertexinc.com/resources/customer-stories, vertexinc.com/partners. A claimed page can correct any of them.
Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Vertex's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Vertex, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.
A new claim receives the current edition's vendor brief for Vertex by email, built from the raw record of the edition. It shows: