Corporate tax provision · September 2026 Edition
Bloomberg Tax Provision vs Vertex
Three of twelve models named Bloomberg Tax Provision first on the direct prompt; zero named Vertex. Bloomberg Tax Provision was named by eleven of the twelve models and Vertex by seven and Bloomberg Tax Provision carries 43 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 share10%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate14%40%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#6A position in a field of 9; printed, not drawn.
Labels4310A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Bloomberg Tax Provision 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 Bloomberg Tax Provision · Thomson Reuters ONESOURCE Tax Provision vs Vertex · Bloomberg Tax Provision vs Thomson Reuters ONESOURCE
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.
Bloomberg Tax ProvisionFirst choices, of twelve modelsVertex
Direct301 against Vertex
Paraphrase011 against Bloomberg Tax Provision
Comparative10
Budget-constrained005 against Bloomberg Tax Provision · 3 against Vertex
Scale-constrained10
Negative10
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 Bloomberg Tax Provision 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 | | | |
Bloomberg Tax Provision Vertex first choice named as an alternative argued againstblank: not namedEach cell is one answer, Bloomberg Tax Provision on the left and Vertex on the right.The direct prompt
The plain question, one answer per model, grouped by where Bloomberg Tax Provision and Vertex stood in it.
Bloomberg Tax Provision first, Vertex not the choice
3 of 12 modelsVertex was named in the answer but not as the choice, or not at all.Gemini 3.5 FlashBloomberg Tax Provision alternatives: Exactera Tax Provision, Longview Tax, Thomson Reuters ONESOURCE Tax Provision, Vena Solutions
DeepSeek V4 FlashBloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: Sovos Tax Provision, Vertex Tax Accounting
MiniMax M2.5Bloomberg Tax Provision, Thomson Reuters ONESOURCE Tax Provision alternatives: CCH Tagetik Tax Provision & Reporting, Taxfyle, Vertex Tax Accounting
Neither was the first choice, one was named
3 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
Qwen 3.7 FlashLongview Tax alternatives: Bloomberg Tax Provision, CSC Corptax, Thomson Reuters ONESOURCE
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.GPT-5.4 miniThomson Reuters ONESOURCE Tax Provision alternatives: CCH Axcess/ProSystem fx tax provision offerings, Longview Tax, ONESOURCE Income Tax / Direct Tax Essential
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
Llama 4 MaverickThomson Reuters ONESOURCE Tax Provision alternatives: Avalara, CCH Axcess Tax, Taxfyle
Kimi K2Thomson Reuters ONESOURCE Tax Provision alternatives: CCH Tagetik, FloQast Tax Provision, Longview Tax, Lucasys Tax Provision, Sovos Tax Provision
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
Bloomberg Tax Provision leads by fourteen points.
Bloomberg Tax Provision14%#1 of 9Vertex0%#– of 9Mid-marketThe figures above
Bloomberg Tax Provision leads by seven points.
Bloomberg Tax Provision10%#2 of 9Vertex2%#6 of 9Enterprise
Level: the same share of first choices.
Bloomberg Tax Provision2%#5 of 9Vertex2%#8 of 9What the models said about Bloomberg Tax Provision
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Bloomberg Tax Provision: An enterprise-grade platform with high implementation overhead.” Qwen 3.7 Flash · budget prompt · hard negative
“significantly cheaper than enterprise solutions like Bloomberg (often $50k-$100k+)” DeepSeek V4 Flash · budget prompt · soft negative
“Deep analytics, but lighter on full compliance | Costly for pure filing needs” Grok 4.1 Fast · paraphrase prompt · soft negative
“Frequently the "go-to" for mid-market companies. It is highly regarded for its transparent calculations (no black box), rapid implementation, and excellent customer support.” Gemini 3.5 Flash · scale prompt · first choice
“If you want the absolute best mix of rapid setup (<2 months), robust calculation, and intuitive interface, choose Bloomberg Tax Provision.” Gemini 3.5 Flash · direct prompt · first choice
“Choose Corptax or Bloomberg if you need comprehensive enterprise-grade automation with the highest audit standards” Kimi K2 · comparative 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 Bloomberg Tax ProvisionThomson Reuters ONESOURCE Tax Provision vs VertexBloomberg Tax Provision vs Thomson Reuters ONESOURCEBloomberg Tax Provision vs Longview TaxBloomberg Tax Provision vs AvalaraThomson Reuters ONESOURCE vs VertexLongview Tax vs VertexAvalara 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.