Justworks vs Paychex PEO
Zero of fourteen models named Justworks first on the direct prompt; three named Paychex PEO. Justworks was named by thirteen of the fourteen models and Paychex PEO by thirteen and Justworks carries 38 labels and Paychex PEO 26, so the shares are not directly comparable.
Named in thirteen categories this edition.
Named in one category this edition.
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
JustworksFirst choices, of fourteen modelsPaychex PEO
Across every category in the October 2026 Edition, Justworks and Paychex PEO were named in the same answer thirty-one times, of the 295 answers naming Justworks and the 56 naming Paychex PEO. In those answers Paychex PEO took the first choice two times and Justworks fourteen.
Every model, every framing
| 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 | | | |
Justworks Paychex PEO first choice named as an alternative argued againstblank: not namedEach cell is one answer, Justworks on the left and Paychex PEO on the right.The direct prompt
Paychex PEO first, Justworks not the choice
3 of 14 modelsJustworks was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
6 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
5 of 14 modelsThe answer made no first choice from these two in this category.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
Justworks70%#1 of 8Paychex PEO4%#4 of 8Justworks24%#1 of 9Paychex PEO12%#4 of 9What the models said about Justworks
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“though it may be a better fit for smaller or less complex teams than a traditional mid-market operation” Perplexity Sonar · direct prompt · soft negative
“While big names (like TriNet, JustWorks, ADP) get complaints due to their size” Qwen 3.7 Flash · negative prompt · soft negative
“Justworks is usually the best first PEO to look at because it's widely cited as a low-friction option with transparent per-employee pricing” GPT-5.4 mini · budget prompt · first choice
“For pure budget (under $100/employee) + full PEO: Start with Justworks Basic. It's frequently ranked #1 for small businesses” Grok 4.1 Fast · budget prompt · first choice
“Justworks and the provider highlighted by EORHQ (at $59/employee/month) are the top choices due to their affordability” Mistral Small · budget 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
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.