Corporate tax provision · October 2026 Edition
Longview Tax vs Vertex
One of fourteen models named Longview Tax first on the direct prompt; zero named Vertex. Longview Tax was named by fourteen of the fourteen models and Vertex by seven and Longview Tax carries 31 labels and Vertex 10, so the shares are not directly comparable.
Named in two categories this edition.
Named in five categories this edition.
First-choice share4%4%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate29%10%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#4#5A position in a field of 9; printed, not drawn.
Labels3110A 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.Bloomberg Tax Provision was named alongside these two in eleven of the fourteen 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 fourteen 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 fourteen models made each the first choice, per way of asking, and how many argued against it.
Longview TaxFirst choices, of fourteen modelsVertex
Direct102 against Longview Tax
Paraphrase021 against Vertex
Comparative01
Budget-constrained102 against Longview Tax
Scale-constrained00
Negative005 against Longview Tax
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Every model, every framing
The eighty-four 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 | ||||||
| GPT-6 Luna | | |||||
| Muse Glimmer 30B | | |
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 14 modelsVertex was named in the answer but not as the choice, or not at all.GPT-5.4 miniBloomberg Tax Provision, Longview Tax
Neither was the first choice, one was named
2 of 14 modelsThe answer put something else first and named one of the two as an alternative.Claude Haiku 4.5Bloomberg Tax Provision alternatives: Longview Tax, Thomson Reuters ONESOURCE Tax Provision
Perplexity SonarThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Longview Tax, Vertex Tax Accounting, Vertex Tax Provision
Neither was named
11 of 14 modelsThe answer made no first choice from these two in this category.Gemini 3.5 FlashBloomberg Tax Provision alternatives: Exactera Tax Provision, OneStream, Vena Solutions
Grok 4.1 FastThomson Reuters ONESOURCE Tax Provision, Vertex Corporate Tax alternatives: Bloomberg Tax Provision, Sovos Tax Provision
Mistral SmallBloomberg Tax Provision alternatives: Oracle Tax Reporting
DeepSeek V4 FlashBloomberg Tax Provision alternatives: TaxPoint, Thomson Reuters ONESOURCE Tax Provision, Vertex Tax Accounting
Llama 4 Maverickno first choice
Qwen 3.7 FlashTaxSeries alternatives: Bloomberg Tax Provision, OneStream Tax Provision, Sovos Tax Provision
Kimi K2Thomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, Vertex Tax Accounting
GLM 4.7 FlashXThomson Reuters ONESOURCE Tax Provision alternatives: CCH Axcess Tax, Vertex Tax Accounting
MiniMax M2.5Bloomberg Tax Provision, Vertex Tax Accounting alternatives: Oracle Tax Reporting, Thomson Reuters ONESOURCE Tax Provision
GPT-6 LunaThomson Reuters ONESOURCE Tax Provision alternatives: CSC Corptax
Muse Glimmer 30BThomson Reuters ONESOURCE Tax Provision alternatives: Bloomberg Tax Provision, OneStream Tax Provision, 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%#8 of 9Vertex0%#– of 9Mid-marketThe figures above
Level: the same share of first choices.
Longview Tax4%#4 of 9Vertex4%#5 of 9Enterprise
Level: the same share of first choices.
Longview Tax2%#6 of 9Vertex2%#7 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.
“one source explicitly says to avoid or be cautious about Longview, ONESOURCE, Workiva, Oracle Tax Reporting, and Corptax in certain budget/fit contexts” Perplexity Sonar · negative prompt · hard negative
“"Avoid for now: OneSource, Corptax, Longview – these are enterprise-grade tools with enterprise-grade price tags."” Muse Glimmer 30B · negative prompt · hard negative
“designed for large enterprises and should be avoided by smaller organizations” Mistral Small · negative prompt · hard negative
“a provision-light SaaS/workpaper tool with Excel import/export and deferred tax mapping, e.g. Longview Tax Provision or Sovos Tax Provision” Muse Glimmer 30B · budget prompt · first choice
“I'd start with Bloomberg Tax Provision or Longview Tax” GPT-5.4 mini · direct prompt · first choice
“Longview Tax is often worth a close look because it's explicitly positioned for midsize and enterprise organizations” GPT-5.4 mini · paraphrase prompt · alternative
What the models said about Vertex
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. One of one in this category shown.
“Vertex - a comprehensive tax compliance software that can handle complex tax logic and is used by large and mid-market companies.” Llama 4 Maverick · 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 VertexTaxAct Business vs Longview TaxTaxAct Business vs VertexLongview Tax vs Sovos Tax ProvisionVertex vs Sovos Tax ProvisionAll 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.