PEO providers · October 2026 Edition
ADP TotalSource vs Paychex PEO
Seven of fourteen models named ADP TotalSource first on the direct prompt; three named Paychex PEO. ADP TotalSource was named by fourteen of the fourteen models and Paychex PEO by thirteen and ADP TotalSource carries 46 labels and Paychex PEO 26, so the shares are not directly comparable.
Named in three categories this edition.
Named in one category this edition.
First-choice share22%12%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate15%8%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#4A position in a field of 9; printed, not drawn.
Labels4626A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, ADP TotalSource reading right to left. Rank and label count are printed, not drawn.TriNet was named alongside these two in nine of the fourteen direct answers. Justworks vs ADP TotalSource · Justworks vs Paychex PEO · ADP TotalSource vs TriNet
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 PEO providers page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
ADP TotalSourceFirst choices, of fourteen modelsPaychex PEO
Direct73
Paraphrase43
Comparative50
Budget-constrained001 against ADP TotalSource · 1 against Paychex PEO
Scale-constrained002 against ADP TotalSource
Negative104 against ADP TotalSource · 1 against Paychex PEO
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.
Across every category in the October 2026 Edition, ADP TotalSource and Paychex PEO were named in the same answer forty-seven times, of the 155 answers naming ADP TotalSource and the 56 naming Paychex PEO. In those answers Paychex PEO took the first choice two times and ADP TotalSource twenty.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where ADP TotalSource and Paychex PEO 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 | | | | |
ADP TotalSource Paychex PEO first choice named as an alternative argued againstblank: not namedEach cell is one answer, ADP TotalSource on the left and Paychex PEO on the right.The direct prompt
The plain question, one answer per model, grouped by where ADP TotalSource and Paychex PEO stood in it.
Both were the first choice
1 of 14 modelsThe answer named them together, and the judge labeled each a first choice.Mistral SmallADP TotalSource, Paychex PEO alternatives: Deel Hire
ADP TotalSource first, Paychex PEO an alternative
6 of 14 modelsPaychex PEO was named in the answer but not as the choice, or not at all.GPT-5.4 miniADP TotalSource alternatives: Insperity, TriNet
DeepSeek V4 FlashADP TotalSource, Rippling alternatives: Insperity, Justworks, TriNet
Kimi K2ADP TotalSource, TriNet alternatives: Insperity, Justworks, Paychex PEO/Oasis
GLM 4.7 FlashXADP TotalSource alternatives: G&A Partners, Justworks, Paychex PEO, Rippling, TriNet
GPT-6 LunaADP TotalSource alternatives: Insperity, TriNet
Muse Glimmer 30BADP TotalSource alternatives: Engage PEO, Insperity, Paychex PEO, TriNet
Paychex PEO first, ADP TotalSource not the choice
2 of 14 modelsADP TotalSource was named in the answer but not as the choice, or not at all.Llama 4 MaverickPaychex PEO alternatives: Deel, Guideflow
MiniMax M2.5Paychex PEO alternatives: CoAdvantage, Deel Hire
Neither was the first choice, one was named
4 of 14 modelsThe answer put something else first and named one of the two as an alternative.Gemini 3.5 FlashRippling alternatives: ADP TotalSource, Insperity, TriNet
Perplexity SonarInsperity, Paychex alternatives: ADP TotalSource, Deel, Rippling
Grok 4.1 FastInsperity alternatives: ADP TotalSource, Justworks, Paychex PEO, TriNet
Qwen 3.7 FlashCoAdvantage alternatives: Deel, Paychex PEO, TriNet
Neither was named
1 of 14 modelsThe answer made no first choice from these two in this category.Claude Haiku 4.5no first choice
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
Paychex PEO leads by two points.
Paychex PEO4%#4 of 8ADP TotalSource2%#5 of 8Mid-marketThe figures above
The order flips: ADP TotalSource leads at mid-market.
ADP TotalSource22%#2 of 9Paychex PEO12%#4 of 9Enterprise
ADP TotalSource leads by sixty-two points.
ADP TotalSource62%#1 of 8Paychex PEO0%#8 of 8What the models said about ADP TotalSource
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“ADP TotalSource has a 3.1 Trustpilot score with numerous negative reviews about customer support, and many users claim they faced payroll accuracy issues” Claude Haiku 4.5 · negative prompt · soft negative
“Many legacy PEOs (like ADP TotalSource or CoAdvantage) run on rigid, older software platforms that do not integrate cleanly with modern tools.” Gemini 3.5 Flash · scale prompt · soft negative
“shows mixed reviews, with some customers reporting: Inconsistent service quality - High costs” MiniMax M2.5 · negative prompt · soft negative
“ADP TotalSource is the most frequently recommended first look because of its mid-market focus, Fortune 500 benefit access and structured HR outsourcing.” Muse Glimmer 30B · paraphrase prompt · first choice
“My top recommendation for most mid-market B2B companies: Start with ADP TotalSource if you're over 100 employees and value scalability” DeepSeek V4 Flash · direct prompt · first choice
“Often ranked as the best overall PEO, ADP is praised for its robust payroll processing, extensive benefits, and strong compliance support.” Mistral Small · comparative prompt · first choice
What the models said about Paychex PEO
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“Paychex is more prone to a-la-carte "nickel-and-diming" ... make sure the quote is all-inclusive.” Gemini 3.5 Flash · budget prompt · soft negative
“Lower ratings (3.69 and 3.80 respectively), described as lacking "PEO-specialist depth"” Kimi K2 · negative prompt · soft negative
“Paychex PEO – Highly rated for midsize businesses, offering payroll, benefits, compliance, workers’ comp, and HR guidance in a single, well-supported setup.” Mistral Small · paraphrase prompt · first choice
“Paychex PEO - a solid PEO solution that helps companies of any size, from small businesses to midsized or enterprise level.” Llama 4 Maverick · direct prompt · first choice
“Best for: Midsize businesses ... Offers comprehensive PEO solutions suitable for companies of various sizes” MiniMax M2.5 · direct prompt · first choice
Also compared
Justworks vs ADP TotalSourceJustworks vs Paychex PEOADP TotalSource vs TriNetADP TotalSource vs RipplingADP TotalSource vs InsperityADP TotalSource vs PaychexTriNet vs Paychex PEOPaychex PEO vs RipplingPaychex PEO vs InsperityPaychex PEO vs PaychexAll twenty-one head-to-head pages and the full peos 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.