ADP vs Paychex Flex
Two of fourteen models named ADP first on the direct prompt; zero named Paychex Flex. ADP was named by thirteen of the fourteen models and Paychex Flex by fourteen and ADP carries 30 labels and Paychex Flex 35, so the shares are not directly comparable.
Named in fourteen categories this edition.
Named in nine categories 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 payroll software page.
By framing
ADPFirst choices, of fourteen modelsPaychex Flex
Across every category in the October 2026 Edition, ADP and Paychex Flex were named in the same answer fifty-four times, of the 201 answers naming ADP and the 157 naming Paychex Flex. In those answers Paychex Flex took the first choice zero times and ADP six.
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 | | | | |
ADP Paychex Flex first choice named as an alternative argued againstblank: not namedEach cell is one answer, ADP on the left and Paychex Flex on the right.The direct prompt
ADP first, Paychex Flex not the choice
2 of 14 modelsPaychex Flex was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
3 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
9 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
What the models said about ADP
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“Severe customer support issues ... Payroll processing failures — missed payrolls, tax filings not submitted” DeepSeek V4 Flash · negative prompt · hard negative
“If your B2B business is mature, growing rapidly, or faces strict regulatory environments, ADP Workforce Now is the safer long-term investment.” Qwen 3.7 Flash · paraphrase prompt · first choice
“ADP is especially noted for being a tried and tested system for mid-sized companies operating across multiple states” Mistral Small · paraphrase prompt · first choice
“I'd most often recommend ADP if your priorities are multi-state payroll, scalability, and a proven system.” Perplexity Sonar · paraphrase prompt · first choice
What the models said about Paychex Flex
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of four in this category shown.
“Hidden fees — documented early termination fees of $1,500–$3,000 ... Missed payrolls and tax filing errors” DeepSeek V4 Flash · negative prompt · hard negative
“Recent class-action lawsuit over a 2024 data breach exposing names/SSNs due to negligence” Grok 4.1 Fast · negative prompt · hard negative
“I'd recommend ADP Workforce Now or Paychex Flex as top choices” Grok 4.1 Fast · paraphrase prompt · first choice
“Modular, strong payroll support, multi-state compliance, good for small to midsize businesses.” GLM 4.7 FlashX · comparative prompt · alternative
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.