Corporate tax provision · September 2026 Edition
Longview Tax vs Vertex
One of twelve models named Longview Tax first on the direct prompt; zero named Vertex. Longview Tax was named by eleven of the twelve models and Vertex by seven and Longview Tax carries 28 labels and Vertex 10, so the shares are not directly comparable.
Named in one category this edition.
Named in three categories this edition.
First-choice share7%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate18%40%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#4#6A position in a field of 9; printed, not drawn.
Labels2810A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Longview Tax reading right to left. Rank and label count are printed, not drawn.Thomson Reuters ONESOURCE Tax Provision was named alongside these two in ten of the twelve direct answers. Thomson Reuters ONESOURCE Tax Provision vs Longview Tax · Thomson Reuters ONESOURCE Tax Provision vs Vertex · Bloomberg Tax Provision vs Longview Tax
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the corporate tax provision page.
By framing
How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
Longview TaxFirst choices, of twelve modelsVertex
Direct101 against Longview Tax · 1 against Vertex
Paraphrase01
Comparative00
Budget-constrained204 against Longview Tax · 3 against Vertex
Scale-constrained00
Negative00
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.
Every model, every framing
The seventy-two answers behind the chart above, one cell each: where Longview Tax and Vertex stood in it.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | |||||
| GPT-5.4 mini | | |||||
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | ||||||
| Grok 4.1 Fast | | |||||
| Mistral Small | | | | |||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | | | |||
| Kimi K2 | | | | |||
| GLM 4.7 FlashX | | | | |||
| MiniMax M2.5 | | |
Longview Tax Vertex first choice named as an alternative argued againstblank: not namedEach cell is one answer, Longview Tax on the left and Vertex on the right.The direct prompt
The plain question, one answer per model, grouped by where Longview Tax and Vertex stood in it.
Longview Tax first, Vertex not the choice
1 of 12 modelsVertex was named in the answer but not as the choice, or not at all.Qwen 3.7 FlashLongview Tax alternatives: Bloomberg Tax Provision, CSC Corptax, Thomson Reuters ONESOURCE
Neither was the first choice, one was named
5 of 12 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5no first choice alternatives: Bloomberg Tax Provision, CSC Corptax, Longview Tax, Thomson Reuters ONESOURCE
GPT-5.4 miniThomson Reuters ONESOURCE Tax Provision alternatives: CCH Axcess/ProSystem fx tax provision offerings, Longview Tax, ONESOURCE Income Tax / Direct Tax Essential
Gemini 3.5 FlashBloomberg Tax Provision alternatives: Exactera Tax Provision, Longview Tax, Thomson Reuters ONESOURCE Tax Provision, Vena Solutions
Kimi K2Thomson Reuters ONESOURCE Tax Provision alternatives: CCH Tagetik, FloQast Tax Provision, Longview Tax, Lucasys Tax Provision, Sovos Tax Provision
GLM 4.7 FlashXThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Longview Tax, Sovos Tax Provision
Neither was named
6 of 12 modelsThe answer made no first choice from these two in this category.Perplexity SonarThomson Reuters ONESOURCE Tax Provision alternatives: CSC Corptax, Wolters Kluwer CCH Tagetik Tax Provision & Reporting
Grok 4.1 FastThomson Reuters ONESOURCE Tax Provision alternatives: TaxPoint, Taxfyle, Vertex Tax Accounting
Mistral SmallThomson Reuters ONESOURCE Tax Provision alternatives: Sovos Tax Provision, Vertex Tax Accounting
DeepSeek V4 FlashBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Sovos Tax Provision, Vertex Tax Accounting
Llama 4 MaverickThomson Reuters ONESOURCE Tax Provision alternatives: Avalara, CCH Axcess Tax, Taxfyle
MiniMax M2.5Bloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: CCH Tagetik Tax Provision & Reporting, Taxfyle, Vertex Tax Accounting
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Level: the same share of first choices.
Longview Tax0%#9 of 9Vertex0%#– of 9Mid-marketThe figures above
Longview Tax leads by five points.
Longview Tax7%#4 of 9Vertex2%#6 of 9Enterprise
Level: the same share of first choices.
Longview Tax2%#6 of 9Vertex2%#8 of 9What the models said about Longview Tax
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Avoid: Longview, ONESOURCE, Workiva, Oracle Tax Reporting, and Corptax.” DeepSeek V4 Flash · budget prompt · hard negative
“Quote-based (typically high) | Enterprise CPM platform” Kimi K2 · budget prompt · hard negative
“Tier-1 enterprise software...routinely costs between $50,000 and $100,000+ annually” Gemini 3.5 Flash · budget prompt · soft negative
“Longview Tax is generally considered the strongest "middle ground" solution to escape the spreadsheet trap without breaking the bank” Qwen 3.7 Flash · budget prompt · first choice
“OneStream and Longview Tax are frequently recommended as they balance cost with essential features” Mistral Small · budget prompt · first choice
“The Sweet Spot for Most Mid-Market Companies: Longview Tax” Qwen 3.7 Flash · direct prompt · first choice
What the models said about Vertex
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.
“Enterprise-focused, indirect tax only (no provision)” Kimi K2 · budget prompt · hard negative
“consider Vertex for indirect tax, but it is not the clearest provision-first choice from the sources I found” GPT-5.4 mini · direct prompt · soft negative
“Corporate income tax (direct tax) | Thomson Reuters ONESOURCE or Vertex” GLM 4.7 FlashX · paraphrase prompt · first choice
Also compared
Thomson Reuters ONESOURCE Tax Provision vs Longview TaxThomson Reuters ONESOURCE Tax Provision vs VertexBloomberg Tax Provision vs Longview TaxBloomberg Tax Provision vs VertexThomson Reuters ONESOURCE vs Longview TaxThomson Reuters ONESOURCE vs VertexLongview Tax vs AvalaraAvalara vs VertexAll fifteen head-to-head pages and the full corporate tax provision standing
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.